diff --git a/BizHawk.Emulation/Computers/Commodore64/Savestate.cs b/BizHawk.Emulation/Computers/Commodore64/Savestate.cs
index c7b5683623..7148d53f15 100644
--- a/BizHawk.Emulation/Computers/Commodore64/Savestate.cs
+++ b/BizHawk.Emulation/Computers/Commodore64/Savestate.cs
@@ -47,7 +47,6 @@ namespace BizHawk.Emulation.Computers.Commodore64
 	public class StateParameters
 	{
 		private Dictionary<string, int> integerList = new Dictionary<string, int>();
-		private Dictionary<string, string> stringList = new Dictionary<string, string>();
 
 		public int this[string key]
 		{
@@ -65,22 +64,6 @@ namespace BizHawk.Emulation.Computers.Commodore64
 			}
 		}
 
-		public string this[string key]
-		{
-			get
-			{
-				if (stringList.ContainsKey(key))
-				{
-					return stringList[key];
-				}
-				return "";
-			}
-			set
-			{
-				stringList[key] = value;
-			}
-		}
-
 		public void ExportBinary(Stream target)
 		{
 			BinaryWriter writer = new BinaryWriter(target);
@@ -92,13 +75,6 @@ namespace BizHawk.Emulation.Computers.Commodore64
 				writer.Write(kv.Value);
 			}
 
-			writer.Write((Int32)stringList.Count);
-			foreach (KeyValuePair<string, string> kv in stringList)
-			{
-				writer.Write(kv.Key);
-				writer.Write(kv.Value);
-			}
-
 			writer.Flush();
 		}
 
@@ -108,13 +84,7 @@ namespace BizHawk.Emulation.Computers.Commodore64
 
 			foreach (KeyValuePair<string, int> kv in integerList)
 			{
-				sb.Append("i" + kv.Key + "=");
-				sb.AppendLine(kv.Value.ToString());
-			}
-
-			foreach (KeyValuePair<string, string> kv in stringList)
-			{
-				sb.Append("s" + kv.Key + "=");
+				sb.Append(kv.Key + "=");
 				sb.AppendLine(kv.Value.ToString());
 			}
 
@@ -134,14 +104,6 @@ namespace BizHawk.Emulation.Computers.Commodore64
 				int val = reader.ReadInt32();
 				integerList[key] = val;
 			}
-
-			count = reader.ReadInt32();
-			for (int i = 0; i < count; i++)
-			{
-				string key = reader.ReadString();
-				string val = reader.ReadString();
-				stringList[key] = val;
-			}
 		}
 
 		public void ImportText(Stream source)
@@ -160,17 +122,7 @@ namespace BizHawk.Emulation.Computers.Commodore64
 
 					if (val.Length > 0 && key.Length > 0)
 					{
-						string valType = val.Substring(0, 1);
-						val = val.Substring(1);
-						switch (valType)
-						{
-							case @"i":
-								integerList[key] = int.Parse(val);
-								break;
-							case @"s":
-								stringList[key] = val;
-								break;
-						}
+						integerList[key] = int.Parse(val);
 					}
 				}
 			}
diff --git a/BizHawk.Emulation/Computers/Commodore64/SidSoundProvider.cs b/BizHawk.Emulation/Computers/Commodore64/SidSoundProvider.cs
index 301b031fe6..4c0fd19a13 100644
--- a/BizHawk.Emulation/Computers/Commodore64/SidSoundProvider.cs
+++ b/BizHawk.Emulation/Computers/Commodore64/SidSoundProvider.cs
@@ -82,10 +82,18 @@ namespace BizHawk.Emulation.Computers.Commodore64
 
 				mixer = voices[0].Output();
 				mixer += voices[1].Output();
-				mixer += voices[2].Output();
+				if (!regs.D3 || !regs.FILT[2])
+					mixer += voices[2].Output();
+
+				// apply volume
+				mixer *= regs.VOL;
+				mixer >>= 4;
+
+				// apply filter
+				// (todo)
 
 				// the mixer is very loud at this point, let's make it quieter
-				mixer /= 8;
+				mixer /= 4;
 
 				if (mixer > 32767)
 					mixer = 326767;