diff --git a/src/burn/drv/irem/d_m62.cpp b/src/burn/drv/irem/d_m62.cpp
index 03a2094c8..93dcc0af6 100644
--- a/src/burn/drv/irem/d_m62.cpp
+++ b/src/burn/drv/irem/d_m62.cpp
@@ -3396,6 +3396,8 @@ static void M62MachineInit()
 	
 	AY8910Init(0, 894886, nBurnSoundRate, &M62SoundLatchRead, NULL, NULL, &AY8910_0PortBWrite);
 	AY8910Init(1, 894886, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.50, BURN_SND_ROUTE_BOTH);
 	
 	GenericTilesInit();
 	
@@ -4744,24 +4746,9 @@ static INT32 M62Frame()
 		nCyclesDone[nCurrentCPU] += nCyclesSegment;
 						
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-    		}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			nSoundBufferPos += nSegmentLength;
 		}
 		
@@ -4776,25 +4763,10 @@ static INT32 M62Frame()
 	}
 	
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
- 			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 		
 		ZetOpen(0);
diff --git a/src/burn/drv/irem/d_m63.cpp b/src/burn/drv/irem/d_m63.cpp
index d5ddb12db..25bd5f684 100644
--- a/src/burn/drv/irem/d_m63.cpp
+++ b/src/burn/drv/irem/d_m63.cpp
@@ -614,6 +614,8 @@ static INT32 DrvInit(void (*pMapMainCPU)(), INT32 (*pRomLoadCallback)(), INT32 s
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 1.00, BURN_SND_ROUTE_BOTH);
 
 	sy_offset = syoffset;
 	char_color_offset = charcoloroff;
@@ -727,7 +729,11 @@ static INT32 atomboyInit()
 
 static INT32 fghtbsktInit()
 {
-	return DrvInit(fghtbskt_main_map, fghtbsktLoadRoms, 240, 0x010, 60/2);
+	INT32 nRet = DrvInit(fghtbskt_main_map, fghtbsktLoadRoms, 240, 0x010, 60/2);
+	
+	AY8910SetAllRoutes(0, 1.00, BURN_SND_ROUTE_BOTH);
+	
+	return nRet;
 }
 
 static void draw_bg_layer()
@@ -885,24 +891,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		AY8910Update(0, &pAY8910Buffer[3], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-			nSample += pAY8910Buffer[3][n];
-			nSample += pAY8910Buffer[4][n];
-			nSample += pAY8910Buffer[5][n];
-
-			nSample /= 8;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 
 		sample_render(pBurnSoundOut, nBurnSoundLen);
 	}
diff --git a/src/burn/drv/konami/d_gyruss.cpp b/src/burn/drv/konami/d_gyruss.cpp
index d42653305..79ab9678c 100644
--- a/src/burn/drv/konami/d_gyruss.cpp
+++ b/src/burn/drv/konami/d_gyruss.cpp
@@ -670,6 +670,11 @@ static INT32 DrvInit()
 	AY8910Init(2, 1789773, nBurnSoundRate, AY8910_3_portA, NULL, NULL, NULL);
 	AY8910Init(3, 1789773, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(4, 1789773, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(2, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(3, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(4, 0.25, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -858,34 +863,7 @@ static INT32 DrvFrame()
 	}
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[ 0], nBurnSoundLen);
-		AY8910Update(1, &pAY8910Buffer[ 3], nBurnSoundLen);
-		AY8910Update(2, &pAY8910Buffer[ 6], nBurnSoundLen);
-		AY8910Update(3, &pAY8910Buffer[ 9], nBurnSoundLen);
-		AY8910Update(4, &pAY8910Buffer[12], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[ 0][n] >> 2;
-			nSample += pAY8910Buffer[ 1][n] >> 2;
-			nSample += pAY8910Buffer[ 2][n] >> 2;
-			nSample += pAY8910Buffer[ 3][n] >> 2;
-			nSample += pAY8910Buffer[ 4][n] >> 2;
-			nSample += pAY8910Buffer[ 5][n] >> 2;
-			nSample += pAY8910Buffer[ 6][n] >> 2;
-			nSample += pAY8910Buffer[ 7][n] >> 2;
-			nSample += pAY8910Buffer[ 8][n] >> 2;
-			nSample += pAY8910Buffer[ 9][n] >> 2;
-			nSample += pAY8910Buffer[10][n] >> 2;
-			nSample += pAY8910Buffer[11][n] >> 2;
-			nSample += pAY8910Buffer[12][n] >> 2;
-			nSample += pAY8910Buffer[13][n] >> 2;
-			nSample += pAY8910Buffer[14][n] >> 2;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/konami/d_pooyan.cpp b/src/burn/drv/konami/d_pooyan.cpp
index 1f6e67604..acc4d57dd 100644
--- a/src/burn/drv/konami/d_pooyan.cpp
+++ b/src/burn/drv/konami/d_pooyan.cpp
@@ -452,6 +452,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1789773, nBurnSoundRate, &AY8910_0_port0, &AY8910_0_port1, NULL, NULL);
 	AY8910Init(1, 1789773, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -602,26 +604,7 @@ static INT32 DrvFrame()
 	}
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_4enraya.cpp b/src/burn/drv/pre90s/d_4enraya.cpp
index 4149c4d1a..fd1242b1b 100644
--- a/src/burn/drv/pre90s/d_4enraya.cpp
+++ b/src/burn/drv/pre90s/d_4enraya.cpp
@@ -339,6 +339,7 @@ static INT32 DrvInit(INT32 game, INT32 sbit)
 	ZetClose();
 
 	AY8910Init(0, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.30, BURN_SND_ROUTE_BOTH);
 
 	sound_bit = sbit;
 
@@ -414,20 +415,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_ambush.cpp b/src/burn/drv/pre90s/d_ambush.cpp
index f8b309960..6e0c0c5ec 100644
--- a/src/burn/drv/pre90s/d_ambush.cpp
+++ b/src/burn/drv/pre90s/d_ambush.cpp
@@ -316,6 +316,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, &AY8910_0_port0, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, &AY8910_1_port0, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.33, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.33, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -486,22 +488,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		AY8910Update(1, &pAY8910Buffer[3], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n] >> 2;
-			nSample += pAY8910Buffer[1][n] >> 2;
-			nSample += pAY8910Buffer[2][n] >> 2;
-			nSample += pAY8910Buffer[3][n] >> 2;
-			nSample += pAY8910Buffer[4][n] >> 2;
-			nSample += pAY8910Buffer[5][n] >> 2;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_arabian.cpp b/src/burn/drv/pre90s/d_arabian.cpp
index 2e065b994..3cdc06434 100644
--- a/src/burn/drv/pre90s/d_arabian.cpp
+++ b/src/burn/drv/pre90s/d_arabian.cpp
@@ -505,6 +505,7 @@ static INT32 DrvInit()
 	ZetClose();
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, ay8910_porta_w, ay8910_portb_w);
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -598,20 +599,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_aztarac.cpp b/src/burn/drv/pre90s/d_aztarac.cpp
index 8b5f53612..1516209b0 100644
--- a/src/burn/drv/pre90s/d_aztarac.cpp
+++ b/src/burn/drv/pre90s/d_aztarac.cpp
@@ -406,6 +406,10 @@ static INT32 DrvInit()
 	AY8910Init(1, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(2, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(3, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.15, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.15, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(2, 0.15, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(3, 0.15, BURN_SND_ROUTE_BOTH);
 
 	DrvPaletteInit();
 
@@ -521,31 +525,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-
-		AY8910Update(0, &pFMBuffer[0], nBurnSoundLen);
-		AY8910Update(1, &pFMBuffer[3], nBurnSoundLen);
-		AY8910Update(2, &pFMBuffer[6], nBurnSoundLen);
-		AY8910Update(3, &pFMBuffer[9], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pFMBuffer[ 0][n] / 2;
-			nSample += pFMBuffer[ 1][n] / 2;
-			nSample += pFMBuffer[ 2][n] / 2;
-			nSample += pFMBuffer[ 3][n] / 2;
-			nSample += pFMBuffer[ 4][n] / 2;
-			nSample += pFMBuffer[ 5][n] / 2;
-			nSample += pFMBuffer[ 6][n] / 2;
-			nSample += pFMBuffer[ 7][n] / 2;
-			nSample += pFMBuffer[ 8][n] / 2;
-			nSample += pFMBuffer[ 9][n] / 2;
-			nSample += pFMBuffer[10][n] / 2;
-			nSample += pFMBuffer[11][n] / 2;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pFMBuffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_blueprnt.cpp b/src/burn/drv/pre90s/d_blueprnt.cpp
index bab55fc5f..21914a071 100644
--- a/src/burn/drv/pre90s/d_blueprnt.cpp
+++ b/src/burn/drv/pre90s/d_blueprnt.cpp
@@ -446,6 +446,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 625000, nBurnSoundRate, NULL, &ay8910_0_read_port_1, &ay8910_0_write_port_0, NULL);
 	AY8910Init(1, 625000, nBurnSoundRate, &ay8910_1_read_port_0, &ay8910_1_read_port_1, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -596,26 +598,7 @@ static INT32 DrvFrame()
 	}
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_bombjack.cpp b/src/burn/drv/pre90s/d_bombjack.cpp
index 73b6b5fa6..b9434107f 100644
--- a/src/burn/drv/pre90s/d_bombjack.cpp
+++ b/src/burn/drv/pre90s/d_bombjack.cpp
@@ -400,6 +400,9 @@ INT32 BjZInit()
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(2, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.13, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.13, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(2, 0.13, BURN_SND_ROUTE_BOTH);
 
 	// remember to do ZetReset() in main driver
 
@@ -833,61 +836,19 @@ INT32 BjFrame()
 
 		// Render Sound Segment
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			AY8910Update(2, &pAY8910Buffer[6], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-				nSample += pAY8910Buffer[6][n] >> 2;
-				nSample += pAY8910Buffer[7][n] >> 2;
-				nSample += pAY8910Buffer[8][n] >> 2;
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			nSoundBufferPos += nSegmentLength;
 		}
 	}
 
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			AY8910Update(2, &pAY8910Buffer[6], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-				nSample += pAY8910Buffer[6][n] >> 2;
-				nSample += pAY8910Buffer[7][n] >> 2;
-				nSample += pAY8910Buffer[8][n] >> 2;
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 	/*ZetOpen(0);
diff --git a/src/burn/drv/pre90s/d_epos.cpp b/src/burn/drv/pre90s/d_epos.cpp
index d3c6ca0d1..780ceb16b 100644
--- a/src/burn/drv/pre90s/d_epos.cpp
+++ b/src/burn/drv/pre90s/d_epos.cpp
@@ -506,6 +506,7 @@ static INT32 DrvInit()
 	ZetClose();
 
 	AY8910Init(0, 2750000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 1.00, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -549,6 +550,7 @@ static INT32 DealerInit()
 	ZetClose();
 
 	AY8910Init(0, 2750000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
 
 	ppi8255_init(1);
 	PPI0PortReadA = DealerPPIReadA;
@@ -635,20 +637,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_exedexes.cpp b/src/burn/drv/pre90s/d_exedexes.cpp
index 73b86e6d6..7956edbff 100644
--- a/src/burn/drv/pre90s/d_exedexes.cpp
+++ b/src/burn/drv/pre90s/d_exedexes.cpp
@@ -435,6 +435,7 @@ static INT32 DrvInit()
 	ZetClose();
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.10, BURN_SND_ROUTE_BOTH);
 
 	SN76489Init(0, 3000000, 0);
 	SN76489Init(1, 3000000, 1);
@@ -667,22 +668,7 @@ static INT32 DrvFrame()
 		SN76496Update(0, pBurnSoundOut, nBurnSoundLen);
 		SN76496Update(1, pBurnSoundOut, nBurnSoundLen);
 
-		INT32 nSample;
-		if (nBurnSoundLen) {
-			AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-			for (INT32 n = 0; n < nBurnSoundLen; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample >>= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-				
-				pBurnSoundOut[(n << 1) + 0] += nSample;
-				pBurnSoundOut[(n << 1) + 1] += nSample;
- 			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 1);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_funkybee.cpp b/src/burn/drv/pre90s/d_funkybee.cpp
index 1d9faaa6a..637fc3b26 100644
--- a/src/burn/drv/pre90s/d_funkybee.cpp
+++ b/src/burn/drv/pre90s/d_funkybee.cpp
@@ -435,6 +435,7 @@ static INT32 DrvInit(INT32 game)
 	ZetClose();
 
 	AY8910Init(0, 1500000, nBurnSoundRate, &funkybee_ay8910_read_A, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -575,24 +576,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_ginganin.cpp b/src/burn/drv/pre90s/d_ginganin.cpp
index 19c84baa9..bcdca10d4 100644
--- a/src/burn/drv/pre90s/d_ginganin.cpp
+++ b/src/burn/drv/pre90s/d_ginganin.cpp
@@ -401,6 +401,7 @@ static INT32 DrvInit()
 	M6809Close();
 
 	AY8910Init(0, 3579545 / 2, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.10, BURN_SND_ROUTE_BOTH);
 	
 	BurnY8950Init(3579545, DrvSndROM, 0x20000, NULL, &DrvSynchroniseStream, 1);
 	BurnTimerAttachM6809Y8950(1000000);
@@ -624,20 +625,7 @@ static INT32 DrvFrame()
 	BurnTimerEndFrameY8950(nCyclesTotal[1]);
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 		
 		BurnY8950Update(pBurnSoundOut, nBurnSoundLen);
 	}
diff --git a/src/burn/drv/pre90s/d_higemaru.cpp b/src/burn/drv/pre90s/d_higemaru.cpp
index 83308b008..0e0b632db 100644
--- a/src/burn/drv/pre90s/d_higemaru.cpp
+++ b/src/burn/drv/pre90s/d_higemaru.cpp
@@ -324,6 +324,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -446,26 +448,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
- 			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_jack.cpp b/src/burn/drv/pre90s/d_jack.cpp
index a9db3dec2..d042ed248 100644
--- a/src/burn/drv/pre90s/d_jack.cpp
+++ b/src/burn/drv/pre90s/d_jack.cpp
@@ -1034,6 +1034,7 @@ static INT32 DrvInit()
 	pAY8910Buffer[2] = pFMBuffer + nBurnSoundLen * 2;
 
 	AY8910Init(0, 1500000, nBurnSoundRate, &soundlatch_r, &timer_r, NULL, NULL);
+	AY8910SetAllRoutes(0, 1.00, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -1208,45 +1209,19 @@ static INT32 DrvFrame()
 		
 		// Render Sound Segment
 		if (pBurnSoundOut && !suprtriv) {	// disable sound for suprtriv
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			nSoundBufferPos += nSegmentLength;
 		}
 	}
 
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut && !suprtriv) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 
diff --git a/src/burn/drv/pre90s/d_kangaroo.cpp b/src/burn/drv/pre90s/d_kangaroo.cpp
index 645aa17f4..c6dfc1234 100644
--- a/src/burn/drv/pre90s/d_kangaroo.cpp
+++ b/src/burn/drv/pre90s/d_kangaroo.cpp
@@ -431,6 +431,7 @@ static INT32 DrvInit()
 	ZetClose();
 
 	AY8910Init(0, 1250000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -572,45 +573,19 @@ INT32 DrvFrame()
 
 		// Render Sound Segment
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			nSoundBufferPos += nSegmentLength;
 		}
 	}
 
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 
diff --git a/src/burn/drv/pre90s/d_kyugo.cpp b/src/burn/drv/pre90s/d_kyugo.cpp
index 104ae0b74..7d0f6b97d 100644
--- a/src/burn/drv/pre90s/d_kyugo.cpp
+++ b/src/burn/drv/pre90s/d_kyugo.cpp
@@ -1925,6 +1925,8 @@ static INT32 KyugoInit()
 
 	AY8910Init(0, 18432000 / 12, nBurnSoundRate, &KyugoDip0Read, &KyugoDip1Read, NULL, NULL);
 	AY8910Init(1, 18432000 / 12, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.30, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.30, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -2052,6 +2054,8 @@ static INT32 Skywolf3Init()
 
 	AY8910Init(0, 18432000 / 12, nBurnSoundRate, &KyugoDip0Read, &KyugoDip1Read, NULL, NULL);
 	AY8910Init(1, 18432000 / 12, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.30, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.30, BURN_SND_ROUTE_BOTH);
 	
 	GenericTilesInit();
 
@@ -2375,50 +2379,20 @@ static INT32 KyugoFrame()
 		
 		// Render Sound Segment
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-    			}
-				nSoundBufferPos += nSegmentLength;
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
+			nSoundBufferPos += nSegmentLength;
 		}
 
 	}
 	
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
- 			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 
diff --git a/src/burn/drv/pre90s/d_marineb.cpp b/src/burn/drv/pre90s/d_marineb.cpp
index 99d18301b..c52bd5d52 100644
--- a/src/burn/drv/pre90s/d_marineb.cpp
+++ b/src/burn/drv/pre90s/d_marineb.cpp
@@ -394,6 +394,7 @@ static INT32 DrvInit()
 	ZetClose();	
 	
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 	
 	GenericTilesInit();
 	DrvDoReset();	
@@ -719,20 +720,7 @@ static INT32 DrvFrame()
 	ZetClose();
 	
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n] >> 2;
-			nSample += pAY8910Buffer[1][n] >> 2;
-			nSample += pAY8910Buffer[2][n] >> 2;
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 	
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_meijinsn.cpp b/src/burn/drv/pre90s/d_meijinsn.cpp
index 52388e061..8cddd10a1 100644
--- a/src/burn/drv/pre90s/d_meijinsn.cpp
+++ b/src/burn/drv/pre90s/d_meijinsn.cpp
@@ -361,6 +361,7 @@ static INT32 DrvInit()
 	ZetClose();
 
 	AY8910Init(0, 2000000, nBurnSoundRate, &ay8910_port_a_r, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.75, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -463,20 +464,7 @@ static INT32 DrvFrame()
 	SekClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_mole.cpp b/src/burn/drv/pre90s/d_mole.cpp
index 7f009445e..4e4b16010 100644
--- a/src/burn/drv/pre90s/d_mole.cpp
+++ b/src/burn/drv/pre90s/d_mole.cpp
@@ -329,6 +329,7 @@ static INT32 DrvInit()
 	pAY8910Buffer[2] = pFMBuffer + nBurnSoundLen * 2;
 
 	AY8910Init(0, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 1.00, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -396,24 +397,7 @@ static INT32 DrvFrame()
 	M6502Close();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_mrflea.cpp b/src/burn/drv/pre90s/d_mrflea.cpp
index b5cb188b1..318622219 100644
--- a/src/burn/drv/pre90s/d_mrflea.cpp
+++ b/src/burn/drv/pre90s/d_mrflea.cpp
@@ -370,6 +370,9 @@ static INT32 DrvInit()
 	AY8910Init(0, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(2, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(2, 0.25, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -491,61 +494,19 @@ static INT32 DrvFrame()
 
 		// Render Sound Segment
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			AY8910Update(2, &pAY8910Buffer[6], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-				nSample += pAY8910Buffer[6][n] >> 2;
-				nSample += pAY8910Buffer[7][n] >> 2;
-				nSample += pAY8910Buffer[8][n] >> 2;
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			nSoundBufferPos += nSegmentLength;
 		}
 	}
 
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			AY8910Update(2, &pAY8910Buffer[6], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-				nSample += pAY8910Buffer[6][n] >> 2;
-				nSample += pAY8910Buffer[7][n] >> 2;
-				nSample += pAY8910Buffer[8][n] >> 2;
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 
diff --git a/src/burn/drv/pre90s/d_mystston.cpp b/src/burn/drv/pre90s/d_mystston.cpp
index 822b595bb..eace2d8d9 100644
--- a/src/burn/drv/pre90s/d_mystston.cpp
+++ b/src/burn/drv/pre90s/d_mystston.cpp
@@ -337,6 +337,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.30, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.30, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -539,26 +541,7 @@ static INT32 DrvFrame()
 	M6502Close();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
- 			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_pacman.cpp b/src/burn/drv/pre90s/d_pacman.cpp
index ffa5e1c1e..f5c001743 100644
--- a/src/burn/drv/pre90s/d_pacman.cpp
+++ b/src/burn/drv/pre90s/d_pacman.cpp
@@ -2492,6 +2492,8 @@ static INT32 DrvInit(void (*mapCallback)(), void (*pInitCallback)(), INT32 selec
 	ZetClose();
 
 	AY8910Init(0, 1789750, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.75, BURN_SND_ROUTE_BOTH);
+	if (game_select == DREMSHPR) AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 
 	SN76496Init(0, 1789750, 0);
 	SN76496Init(1, 1789750, 1);		
@@ -2674,21 +2676,7 @@ static INT32 DrvFrame()
 			
 			if (nSegmentLength) {
 				if (game_select == DREMSHPR || game_select == CRUSHS) {
-					INT32 nSample;
-				
-					AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-					for (INT32 n = 0; n < nSegmentLength; n++) {
-						nSample  = pAY8910Buffer[0][n];
-						nSample += pAY8910Buffer[1][n];
-						nSample += pAY8910Buffer[2][n];
-	
-						nSample /= 4;
-
-						nSample = BURN_SND_CLIP(nSample);
-						
-						pSoundBuf[(n << 1) + 0] = nSample;
-						pSoundBuf[(n << 1) + 1] = nSample;
-					}
+					AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 				} else {
 					if (game_select == VANVAN) {
 						SN76496Update(0, pSoundBuf, nSegmentLength);
@@ -2708,21 +2696,7 @@ static INT32 DrvFrame()
 
 		if (nSegmentLength) {
 			if (game_select == DREMSHPR || game_select == CRUSHS) {
-				INT32 nSample;
-				
-				AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-				for (INT32 n = 0; n < nSegmentLength; n++) {
-					nSample  = pAY8910Buffer[0][n];
-					nSample += pAY8910Buffer[1][n];
-					nSample += pAY8910Buffer[2][n];
-	
-					nSample /= 4;
-
-					nSample = BURN_SND_CLIP(nSample);
-						
-					pSoundBuf[(n << 1) + 0] = nSample;
-					pSoundBuf[(n << 1) + 1] = nSample;
-				}
+				AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			} else {
 				if (game_select == VANVAN) {
 					SN76496Update(0, pSoundBuf, nSegmentLength);
diff --git a/src/burn/drv/pre90s/d_pkunwar.cpp b/src/burn/drv/pre90s/d_pkunwar.cpp
index 428b7503e..b56c910de 100644
--- a/src/burn/drv/pre90s/d_pkunwar.cpp
+++ b/src/burn/drv/pre90s/d_pkunwar.cpp
@@ -310,6 +310,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, &pkunwar_port_0, &pkunwar_port_1, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, &pkunwar_port_2, &pkunwar_port_3, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -497,26 +499,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-   			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-    		}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_quizo.cpp b/src/burn/drv/pre90s/d_quizo.cpp
index c76d8b372..1155132bf 100644
--- a/src/burn/drv/pre90s/d_quizo.cpp
+++ b/src/burn/drv/pre90s/d_quizo.cpp
@@ -256,6 +256,7 @@ static INT32 DrvInit()
 	pAY8910Buffer[2] = pFMBuffer + nBurnSoundLen * 2;
 
 	AY8910Init(0, 1342329, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -267,32 +268,13 @@ static INT32 DrvFrame()
 {
 	if (DrvReset) DrvDoReset();
 
-	INT32 nSoundBufferPos = 0;
-
 	ZetOpen(0);
 	ZetRun(4000000 / 60);
 	ZetRaiseIrq(1);
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
-		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) DrvDraw();
diff --git a/src/burn/drv/pre90s/d_route16.cpp b/src/burn/drv/pre90s/d_route16.cpp
index 4d651943b..fb5b96447 100644
--- a/src/burn/drv/pre90s/d_route16.cpp
+++ b/src/burn/drv/pre90s/d_route16.cpp
@@ -463,6 +463,7 @@ static INT32 DrvInit()
 	pAY8910Buffer[2] = pFMBuffer + nBurnSoundLen * 2;
 
 	AY8910Init(0, 1250000, nBurnSoundRate, NULL, NULL, &stratvox_sn76477_write, NULL);
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 	
 	DACInit(0, 0, 1, DrvSyncDAC);
 	DACSetVolShift(0, 2);
@@ -619,22 +620,9 @@ static INT32 DrvFrame()
 
 		// Render Sound Segment
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			
 			nSoundBufferPos += nSegmentLength;
 		}
@@ -642,23 +630,10 @@ static INT32 DrvFrame()
 
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 		
 		DACUpdate(pBurnSoundOut, nBurnSoundLen);
diff --git a/src/burn/drv/pre90s/d_scregg.cpp b/src/burn/drv/pre90s/d_scregg.cpp
index 52a535f5e..b4da8b1fe 100644
--- a/src/burn/drv/pre90s/d_scregg.cpp
+++ b/src/burn/drv/pre90s/d_scregg.cpp
@@ -380,6 +380,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.23, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.23, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -524,26 +526,7 @@ static INT32 DrvFrame()
 	M6502Close();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		INT32 nSegmentLength = nBurnSoundLen;
-		INT16* pSoundBuf = pBurnSoundOut;
-		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
- 			}
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_solomon.cpp b/src/burn/drv/pre90s/d_solomon.cpp
index 63cf485dd..29d8ad64e 100644
--- a/src/burn/drv/pre90s/d_solomon.cpp
+++ b/src/burn/drv/pre90s/d_solomon.cpp
@@ -469,6 +469,9 @@ INT32 SolomonInit()
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(2, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.12, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.12, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(2, 0.12, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -709,57 +712,19 @@ INT32 SolomonFrame()
 
 		// Render Sound Segment
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			AY8910Update(2, &pAY8910Buffer[6], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-				nSample += pAY8910Buffer[6][n] >> 2;
-				nSample += pAY8910Buffer[7][n] >> 2;
-				nSample += pAY8910Buffer[8][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-    			}
-				nSoundBufferPos += nSegmentLength;
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
+			nSoundBufferPos += nSegmentLength;
 		}
 	}
 
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			AY8910Update(2, &pAY8910Buffer[6], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-				nSample += pAY8910Buffer[6][n] >> 2;
-				nSample += pAY8910Buffer[7][n] >> 2;
-				nSample += pAY8910Buffer[8][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
- 			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 
diff --git a/src/burn/drv/pre90s/d_sonson.cpp b/src/burn/drv/pre90s/d_sonson.cpp
index b83e7c6eb..5e9466b26 100644
--- a/src/burn/drv/pre90s/d_sonson.cpp
+++ b/src/burn/drv/pre90s/d_sonson.cpp
@@ -425,6 +425,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.30, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.30, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -593,52 +595,19 @@ static INT32 DrvFrame()
 		M6809Close();
 
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-				nSample += pAY8910Buffer[3][n];
-				nSample += pAY8910Buffer[4][n];
-				nSample += pAY8910Buffer[5][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			nSoundBufferPos += nSegmentLength;
 		}
 	}
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-		AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-		AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-		for (INT32 n = 0; n < nSegmentLength; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-			nSample += pAY8910Buffer[3][n];
-			nSample += pAY8910Buffer[4][n];
-			nSample += pAY8910Buffer[5][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pSoundBuf[(n << 1) + 0] = nSample;
-			pSoundBuf[(n << 1) + 1] = nSample;
+		if (nSegmentLength) {
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
-		nSoundBufferPos += nSegmentLength;
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pre90s/d_vulgus.cpp b/src/burn/drv/pre90s/d_vulgus.cpp
index 851372bf1..6b38380ab 100644
--- a/src/burn/drv/pre90s/d_vulgus.cpp
+++ b/src/burn/drv/pre90s/d_vulgus.cpp
@@ -413,6 +413,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
 
 	DrvDoReset();
 
@@ -592,48 +594,18 @@ static INT32 DrvFrame()
 		ZetClose();
 
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) | 0] = nSample;
-				pSoundBuf[(n << 1) | 1] = nSample;
-    		}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			nSoundBufferPos += nSegmentLength;
 		}
 	}
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) | 0] = nSample;
-				pSoundBuf[(n << 1) | 1] = nSample;
- 			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 
diff --git a/src/burn/drv/pre90s/d_wallc.cpp b/src/burn/drv/pre90s/d_wallc.cpp
index 86d9499b3..cd229343c 100644
--- a/src/burn/drv/pre90s/d_wallc.cpp
+++ b/src/burn/drv/pre90s/d_wallc.cpp
@@ -273,6 +273,7 @@ static INT32 DrvInit(INT32 incr)
 	ZetClose();
 
 	AY8910Init(0, 1536000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.30, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -341,20 +342,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/pst90s/d_kaneko16.cpp b/src/burn/drv/pst90s/d_kaneko16.cpp
index b2a33ef9c..c4fe92362 100644
--- a/src/burn/drv/pst90s/d_kaneko16.cpp
+++ b/src/burn/drv/pst90s/d_kaneko16.cpp
@@ -2919,6 +2919,8 @@ static INT32 BerlwallInit()
 
 	AY8910Init(0, 2000000, nBurnSoundRate, &Kaneko16Dip0Read, &Kaneko16Dip1Read, NULL, NULL);
 	AY8910Init(1, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 1.00, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 1.00, BURN_SND_ROUTE_BOTH);
 	
 	// Setup the OKIM6295 emulation
 	MSM6295Init(0, (12000000 / 6) / 132, 100.0, 1);
@@ -4624,24 +4626,9 @@ static INT32 ExplbrkrFrame()
 
 		// Render Sound Segment
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-    		}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			
 			nSoundBufferPos += nSegmentLength;
 		}
@@ -4649,25 +4636,10 @@ static INT32 ExplbrkrFrame()
 	
 	// Make sure the buffer is entirely filled.
 	if (pBurnSoundOut) {
-		INT32 nSample;
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n] >> 2;
-				nSample += pAY8910Buffer[1][n] >> 2;
-				nSample += pAY8910Buffer[2][n] >> 2;
-				nSample += pAY8910Buffer[3][n] >> 2;
-				nSample += pAY8910Buffer[4][n] >> 2;
-				nSample += pAY8910Buffer[5][n] >> 2;
-
-				nSample = BURN_SND_CLIP(nSample);
-
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
- 			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 		
 		MSM6295Render(0, pBurnSoundOut, nBurnSoundLen);
diff --git a/src/burn/drv/pst90s/d_suna16.cpp b/src/burn/drv/pst90s/d_suna16.cpp
index 54f240235..6045e2533 100644
--- a/src/burn/drv/pst90s/d_suna16.cpp
+++ b/src/burn/drv/pst90s/d_suna16.cpp
@@ -1462,6 +1462,9 @@ static INT32 BestbestInit()
 	BurnYM3526SetRoute(BURN_SND_YM3526_ROUTE, 1.00, BURN_SND_ROUTE_BOTH);
 	
 	AY8910Init(0, 1500000, nBurnSoundRate, NULL, NULL, bestbest_ay8910_write_a, NULL);
+	AY8910SetRoute(0, BURN_SND_AY8910_ROUTE_1, 1.00, BURN_SND_ROUTE_LEFT);
+	AY8910SetRoute(0, BURN_SND_AY8910_ROUTE_2, 1.00, BURN_SND_ROUTE_RIGHT);
+	AY8910SetRoute(0, BURN_SND_AY8910_ROUTE_3, 0.00, BURN_SND_ROUTE_BOTH); // suppressed?
 
 	DACInit(0, 0, 1, bestbestSyncDAC);
 	DACInit(1, 0, 1, bestbestSyncDAC);
@@ -1938,21 +1941,8 @@ static INT32 BestbestFrame()
 		if (pBurnSoundOut) {
 			INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 			INT16* pSoundBuf = pSoundBuffer + (nSoundBufferPos << 1);
-			INT32 nSample;
 
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-				
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			
 			nSoundBufferPos += nSegmentLength;
 		}
@@ -1962,22 +1952,9 @@ static INT32 BestbestFrame()
 	if (pBurnSoundOut) {
 		INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 		INT16* pSoundBuf = pSoundBuffer + (nSoundBufferPos << 1);
-		INT32 nSample;
 
 		if (nSegmentLength) {
-			AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-			for (INT32 n = 0; n < nSegmentLength; n++) {
-				nSample  = pAY8910Buffer[0][n];
-				nSample += pAY8910Buffer[1][n];
-				nSample += pAY8910Buffer[2][n];
-
-				nSample /= 4;
-
-				nSample = BURN_SND_CLIP(nSample);
-				
-				pSoundBuf[(n << 1) + 0] = nSample;
-				pSoundBuf[(n << 1) + 1] = nSample;
-			}
+			AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 		}
 	}
 	
diff --git a/src/burn/drv/taito/d_arkanoid.cpp b/src/burn/drv/taito/d_arkanoid.cpp
index 250a86ec1..fb676bd32 100644
--- a/src/burn/drv/taito/d_arkanoid.cpp
+++ b/src/burn/drv/taito/d_arkanoid.cpp
@@ -1103,6 +1103,8 @@ static INT32 DrvInit()
 	m67805_taito_init(DrvMcuROM, DrvMcuRAM, &arkanoid_m68705_interface);
 
 	AY8910Init(0, 1500000, nBurnSoundRate, &ay8910_read_port_5, &ay8910_read_port_4, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.33, BURN_SND_ROUTE_BOTH);
+	if (arkanoid_bootleg_id == HEXA) AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -1239,20 +1241,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/taito/d_chaknpop.cpp b/src/burn/drv/taito/d_chaknpop.cpp
index bd0c681d8..2a2714cd9 100644
--- a/src/burn/drv/taito/d_chaknpop.cpp
+++ b/src/burn/drv/taito/d_chaknpop.cpp
@@ -521,6 +521,8 @@ static INT32 DrvInit()
 
 	AY8910Init(0, 1536000, nBurnSoundRate, &ay8910_0_read_port_A, &ay8910_0_read_port_B, NULL, NULL);
 	AY8910Init(1, 1536000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.15, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(0, 0.10, BURN_SND_ROUTE_BOTH);
 
 	GenericTilesInit();
 
@@ -681,29 +683,7 @@ static INT32 DrvFrame()
 	ZetClose();
 
 	if (pBurnSoundOut) {
-		INT32 nSample, xSample;
-
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		AY8910Update(0, &pAY8910Buffer[3], nBurnSoundLen);
-
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-			nSample = (nSample * 15) / 100;
-
-			xSample  = pAY8910Buffer[0][n];
-			xSample += pAY8910Buffer[1][n];
-			xSample += pAY8910Buffer[2][n];
-			xSample = (xSample * 10) / 100;
-
-			nSample += xSample;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);
 	}
 
 	if (pBurnDraw) {
diff --git a/src/burn/drv/taito/d_flstory.cpp b/src/burn/drv/taito/d_flstory.cpp
index c247cdc55..dd6ae16be 100644
--- a/src/burn/drv/taito/d_flstory.cpp
+++ b/src/burn/drv/taito/d_flstory.cpp
@@ -876,6 +876,7 @@ static INT32 DrvInit()
 	m67805_taito_init(DrvMcuROM, DrvMcuRAM, &standard_m68705_interface);
 
 	AY8910Init(0, 2000000, nBurnSoundRate, NULL, NULL, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.10, BURN_SND_ROUTE_BOTH);
 
 	DACInit(0, 0, 1, flstoryDACSync);
 	DACSetVolShift(0, 2);
@@ -1179,21 +1180,7 @@ static INT32 DrvFrame()
 	ZetOpen(1);
 
 	if (pBurnSoundOut) {
-		INT32 nSample;
-		AY8910Update(0, &pAY8910Buffer[0], nBurnSoundLen);
-		for (INT32 n = 0; n < nBurnSoundLen; n++) {
-			nSample  = pAY8910Buffer[0][n];
-			nSample += pAY8910Buffer[1][n];
-			nSample += pAY8910Buffer[2][n];
-
-			nSample /= 4;
-
-			nSample = BURN_SND_CLIP(nSample);
-
-			pBurnSoundOut[(n << 1) + 0] = nSample;
-			pBurnSoundOut[(n << 1) + 1] = nSample;
-		}
-			
+		AY8910Render(&pAY8910Buffer[0], pBurnSoundOut, nBurnSoundLen, 0);			
 		DACUpdate(pBurnSoundOut, nBurnSoundLen);
 	}
 
@@ -1407,7 +1394,11 @@ static INT32 victnineInit()
 {
 	select_game = 2;
 
-	return DrvInit();
+	INT32 nRet = DrvInit();
+	
+	AY8910SetAllRoutes(0, 0.50, BURN_SND_ROUTE_BOTH);
+	
+	return nRet;
 }
 
 struct BurnDriverD BurnDrvVictnine = {
diff --git a/src/burn/drv/toaplan/d_tigerheli.cpp b/src/burn/drv/toaplan/d_tigerheli.cpp
index cacfcdfb3..cc3391e6f 100644
--- a/src/burn/drv/toaplan/d_tigerheli.cpp
+++ b/src/burn/drv/toaplan/d_tigerheli.cpp
@@ -2115,6 +2115,8 @@ static INT32 tigerhInit()
 
 	AY8910Init(0, 1500000, nBurnSoundRate, &tigerhReadPort0, &tigerhReadPort1, NULL, NULL);
 	AY8910Init(1, 1500000, nBurnSoundRate, &tigerhReadPort2, &tigerhReadPort3, NULL, NULL);
+	AY8910SetAllRoutes(0, 0.25, BURN_SND_ROUTE_BOTH);
+	AY8910SetAllRoutes(1, 0.25, BURN_SND_ROUTE_BOTH);
 
 	TigerHeliTextInit();
 	TigerHeliPaletteInit();
@@ -2309,24 +2311,9 @@ static INT32 tigerhFrame()
 		{
 			// Render sound segment
 			if (pBurnSoundOut) {
-				INT32 nSample;
 				INT32 nSegmentLength = nBurnSoundLen / nInterleave;
 				INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
-				AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-				AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-   				for (INT32 n = 0; n < nSegmentLength; n++) {
-					nSample  = pAY8910Buffer[0][n] >> 2;
-					nSample += pAY8910Buffer[1][n] >> 2;
-					nSample += pAY8910Buffer[2][n] >> 2;
-					nSample += pAY8910Buffer[3][n] >> 2;
-					nSample += pAY8910Buffer[4][n] >> 2;
-					nSample += pAY8910Buffer[5][n] >> 2;
-
-					nSample = BURN_SND_CLIP(nSample);
-
-					pSoundBuf[(n << 1) + 0] = nSample;
-					pSoundBuf[(n << 1) + 1] = nSample;
-    			}
+				AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 				nSoundBufferPos += nSegmentLength;
 			}
 		}
@@ -2335,25 +2322,10 @@ static INT32 tigerhFrame()
 	{
 		// Make sure the buffer is entirely filled.
 		if (pBurnSoundOut) {
-			INT32 nSample;
 			INT32 nSegmentLength = nBurnSoundLen - nSoundBufferPos;
 			INT16* pSoundBuf = pBurnSoundOut + (nSoundBufferPos << 1);
 			if (nSegmentLength) {
-				AY8910Update(0, &pAY8910Buffer[0], nSegmentLength);
-				AY8910Update(1, &pAY8910Buffer[3], nSegmentLength);
-   				for (INT32 n = 0; n < nSegmentLength; n++) {
-					nSample  = pAY8910Buffer[0][n] >> 2;
-					nSample += pAY8910Buffer[1][n] >> 2;
-					nSample += pAY8910Buffer[2][n] >> 2;
-					nSample += pAY8910Buffer[3][n] >> 2;
-					nSample += pAY8910Buffer[4][n] >> 2;
-					nSample += pAY8910Buffer[5][n] >> 2;
-
-					nSample = BURN_SND_CLIP(nSample);
-
-					pSoundBuf[(n << 1) + 0] = nSample;
-					pSoundBuf[(n << 1) + 1] = nSample;
-    			}
+				AY8910Render(&pAY8910Buffer[0], pSoundBuf, nSegmentLength, 0);
 			}
 		}
 	}