diff --git a/src/burn/drv/pre90s/d_ninjakd2.cpp b/src/burn/drv/pre90s/d_ninjakd2.cpp
index cf04594fd..991811e96 100644
--- a/src/burn/drv/pre90s/d_ninjakd2.cpp
+++ b/src/burn/drv/pre90s/d_ninjakd2.cpp
@@ -1094,6 +1094,16 @@ static void ninjakd2_sound_init()
 	BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_3, 0.50, BURN_SND_ROUTE_BOTH);
 }
 
+static void lower_psg_volume(double voll)
+{
+	BurnYM2203SetRoute(0, BURN_SND_YM2203_AY8910_ROUTE_1, voll, BURN_SND_ROUTE_BOTH);
+	BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_1, voll, BURN_SND_ROUTE_BOTH);
+	BurnYM2203SetRoute(0, BURN_SND_YM2203_AY8910_ROUTE_2, voll, BURN_SND_ROUTE_BOTH);
+	BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_2, voll, BURN_SND_ROUTE_BOTH);
+	BurnYM2203SetRoute(0, BURN_SND_YM2203_AY8910_ROUTE_3, voll, BURN_SND_ROUTE_BOTH);
+	BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_3, voll, BURN_SND_ROUTE_BOTH);
+}
+
 static INT32 DrvDoReset()
 {
 	memset(AllRam, 0, RamEnd - AllRam);
@@ -1363,6 +1373,7 @@ static INT32 MnightInit()
 	ZetClose();
 
 	ninjakd2_sound_init();
+	lower_psg_volume(0.05);
 
 	GenericTilesInit();
 
@@ -1444,13 +1455,7 @@ static INT32 RobokidInit()
 	ZetClose();
 
 	ninjakd2_sound_init();
-
-	BurnYM2203SetRoute(0, BURN_SND_YM2203_AY8910_ROUTE_1, 0.03, BURN_SND_ROUTE_BOTH);
-	BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_1, 0.03, BURN_SND_ROUTE_BOTH);
-	BurnYM2203SetRoute(0, BURN_SND_YM2203_AY8910_ROUTE_2, 0.03, BURN_SND_ROUTE_BOTH);
-	BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_2, 0.03, BURN_SND_ROUTE_BOTH);
-	BurnYM2203SetRoute(0, BURN_SND_YM2203_AY8910_ROUTE_3, 0.03, BURN_SND_ROUTE_BOTH);
-	BurnYM2203SetRoute(1, BURN_SND_YM2203_AY8910_ROUTE_3, 0.03, BURN_SND_ROUTE_BOTH);
+	lower_psg_volume(0.03);
 
 	GenericTilesInit();
 
@@ -1509,6 +1514,7 @@ static INT32 OmegafInit()
 	ZetClose();
 
 	ninjakd2_sound_init();
+	lower_psg_volume(0.03);
 
 	GenericTilesInit();