diff --git a/src/engine/platform/fmshared_OPN.h b/src/engine/platform/fmshared_OPN.h
index 4f32b4923..e1b5eca7c 100644
--- a/src/engine/platform/fmshared_OPN.h
+++ b/src/engine/platform/fmshared_OPN.h
@@ -154,6 +154,8 @@ class DivPlatformOPN: public DivPlatformFMBase {
     unsigned int ayDiv;
     unsigned char csmChan;
     unsigned char lfoValue;
+    unsigned short ssgVol;
+    unsigned short fmVol;
     bool extSys, useCombo, fbAllOps;
 
     DivConfig ayFlags;
@@ -172,6 +174,8 @@ class DivPlatformOPN: public DivPlatformFMBase {
       ayDiv(a),
       csmChan(cc),
       lfoValue(0),
+      ssgVol(128),
+      fmVol(256),
       extSys(isExtSys),
       useCombo(false),
       fbAllOps(false) {}
diff --git a/src/engine/platform/ym2203.cpp b/src/engine/platform/ym2203.cpp
index 216a24186..c02b074d1 100644
--- a/src/engine/platform/ym2203.cpp
+++ b/src/engine/platform/ym2203.cpp
@@ -210,11 +210,12 @@ void DivPlatformYM2203::acquire_combo(short** buf, size_t len) {
     );
 
     os&=~3;
+    os=(os*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os+=((fmout.data[1]+fmout.data[2]+fmout.data[3])>>1);
+    os+=((fmout.data[1]+fmout.data[2]+fmout.data[3])*ssgVol)>>8;
     if (os<-32768) os=-32768;
     if (os>32767) os=32767;
   
@@ -255,7 +256,7 @@ void DivPlatformYM2203::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os=fmout.data[0]+((fmout.data[1]+fmout.data[2]+fmout.data[3])>>1);
+    os=((fmout.data[0]*fmVol)>>8)+(((fmout.data[1]+fmout.data[2]+fmout.data[3])*ssgVol)>>8);
     if (os<-32768) os=-32768;
     if (os>32767) os=32767;
   
@@ -1074,6 +1075,8 @@ void DivPlatformYM2203::setFlags(const DivConfig& flags) {
   CHECK_CUSTOM_CLOCK;
   noExtMacros=flags.getBool("noExtMacros",false);
   fbAllOps=flags.getBool("fbAllOps",false);
+  ssgVol=flags.getInt("ssgVol",128);
+  fmVol=flags.getInt("fmVol",256);
   rate=fm->sample_rate(chipClock);
   for (int i=0; i<6; i++) {
     oscBuf[i]->rate=rate;
diff --git a/src/engine/platform/ym2608.cpp b/src/engine/platform/ym2608.cpp
index 52301d3ec..1c501fe52 100644
--- a/src/engine/platform/ym2608.cpp
+++ b/src/engine/platform/ym2608.cpp
@@ -374,15 +374,17 @@ void DivPlatformYM2608::acquire_combo(short** buf, size_t len) {
 
     os[0]>>=1;
     os[1]>>=1;
+    os[0]=(os[0]*fmVol)>>8;
+    os[1]=(os[1]*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os[0]+=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]+=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -439,11 +441,11 @@ void DivPlatformYM2608::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os[0]=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -1603,6 +1605,8 @@ void DivPlatformYM2608::setFlags(const DivConfig& flags) {
   CHECK_CUSTOM_CLOCK;
   noExtMacros=flags.getBool("noExtMacros",false);
   fbAllOps=flags.getBool("fbAllOps",false);
+  ssgVol=flags.getInt("ssgVol",128);
+  fmVol=flags.getInt("fmVol",256);
   rate=fm->sample_rate(chipClock);
   for (int i=0; i<16; i++) {
     oscBuf[i]->rate=rate;
diff --git a/src/engine/platform/ym2610.cpp b/src/engine/platform/ym2610.cpp
index 2263acc7b..94da94447 100644
--- a/src/engine/platform/ym2610.cpp
+++ b/src/engine/platform/ym2610.cpp
@@ -305,15 +305,17 @@ void DivPlatformYM2610::acquire_combo(short** buf, size_t len) {
 
     os[0]>>=1;
     os[1]>>=1;
+    os[0]=(os[0]*fmVol)>>8;
+    os[1]=(os[1]*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os[0]+=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]+=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -372,11 +374,11 @@ void DivPlatformYM2610::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os[0]=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
diff --git a/src/engine/platform/ym2610b.cpp b/src/engine/platform/ym2610b.cpp
index ddba18690..79792df01 100644
--- a/src/engine/platform/ym2610b.cpp
+++ b/src/engine/platform/ym2610b.cpp
@@ -373,15 +373,17 @@ void DivPlatformYM2610B::acquire_combo(short** buf, size_t len) {
 
     os[0]>>=1;
     os[1]>>=1;
+    os[0]=(os[0]*fmVol)>>8;
+    os[1]=(os[1]*fmVol)>>8;
 
     // ymfm part
     fm->generate(&fmout);
 
-    os[0]+=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]+=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
@@ -438,11 +440,11 @@ void DivPlatformYM2610B::acquire_ymfm(short** buf, size_t len) {
     
     fm->generate(&fmout);
 
-    os[0]=fmout.data[0]+(fmout.data[2]>>1);
+    os[0]+=((fmout.data[0]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[0]<-32768) os[0]=-32768;
     if (os[0]>32767) os[0]=32767;
 
-    os[1]=fmout.data[1]+(fmout.data[2]>>1);
+    os[1]+=((fmout.data[1]*fmVol)>>8)+((fmout.data[2]*ssgVol)>>8);
     if (os[1]<-32768) os[1]=-32768;
     if (os[1]>32767) os[1]=32767;
   
diff --git a/src/engine/platform/ym2610shared.h b/src/engine/platform/ym2610shared.h
index d35c5fce8..5af52ba6f 100644
--- a/src/engine/platform/ym2610shared.h
+++ b/src/engine/platform/ym2610shared.h
@@ -222,6 +222,8 @@ class DivPlatformYM2610Base: public DivPlatformOPN {
       CHECK_CUSTOM_CLOCK;
       noExtMacros=flags.getBool("noExtMacros",false);
       fbAllOps=flags.getBool("fbAllOps",false);
+      ssgVol=flags.getInt("ssgVol",128);
+      fmVol=flags.getInt("fmVol",256);
       rate=fm->sample_rate(chipClock);
       for (int i=0; i<16; i++) {
         oscBuf[i]->rate=rate;
diff --git a/src/gui/sysConf.cpp b/src/gui/sysConf.cpp
index d90264502..75f535c09 100644
--- a/src/gui/sysConf.cpp
+++ b/src/gui/sysConf.cpp
@@ -472,6 +472,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
       int clockSel=flags.getInt("clockSel",0);
       bool noExtMacros=flags.getBool("noExtMacros",false);
       bool fbAllOps=flags.getBool("fbAllOps",false);
+      int ssgVol=flags.getInt("ssgVol",128);
+      int fmVol=flags.getInt("fmVol",256);
 
       if (ImGui::RadioButton("8MHz (Neo Geo MVS)",clockSel==0)) {
         clockSel=0;
@@ -491,11 +493,25 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         }
       }
 
+      if (CWSliderInt("SSG Volume",&ssgVol,0,256)) {
+        if (ssgVol<0) ssgVol=0;
+        if (ssgVol>256) ssgVol=256;
+        altered=true;
+      } rightClickable
+
+      if (CWSliderInt("FM/ADPCM Volume",&fmVol,0,256)) {
+        if (fmVol<0) fmVol=0;
+        if (fmVol>256) fmVol=256;
+        altered=true;
+      } rightClickable
+
       if (altered) {
         e->lockSave([&]() {
           flags.set("clockSel",clockSel);
           flags.set("noExtMacros",noExtMacros);
           flags.set("fbAllOps",fbAllOps);
+          flags.set("ssgVol",ssgVol);
+          flags.set("fmVol",fmVol);
         });
       }
       break;
@@ -854,6 +870,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
       int prescale=flags.getInt("prescale",0);
       bool noExtMacros=flags.getBool("noExtMacros",false);
       bool fbAllOps=flags.getBool("fbAllOps",false);
+      int ssgVol=flags.getInt("ssgVol",128);
+      int fmVol=flags.getInt("fmVol",256);
 
       ImGui::Text("Clock rate:");
       if (ImGui::RadioButton("3.58MHz (NTSC)",clockSel==0)) {
@@ -894,6 +912,18 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         altered=true;
       }
 
+      if (CWSliderInt("SSG Volume",&ssgVol,0,256)) {
+        if (ssgVol<0) ssgVol=0;
+        if (ssgVol>256) ssgVol=256;
+        altered=true;
+      } rightClickable
+
+      if (CWSliderInt("FM Volume",&fmVol,0,256)) {
+        if (fmVol<0) fmVol=0;
+        if (fmVol>256) fmVol=256;
+        altered=true;
+      } rightClickable
+
       if (type==DIV_SYSTEM_YM2203_EXT || type==DIV_SYSTEM_YM2203_CSM) {
         if (ImGui::Checkbox("Disable ExtCh FM macros (compatibility)",&noExtMacros)) {
           altered=true;
@@ -909,6 +939,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
           flags.set("prescale",prescale);
           flags.set("noExtMacros",noExtMacros);
           flags.set("fbAllOps",fbAllOps);
+          flags.set("ssgVol",ssgVol);
+          flags.set("fmVol",fmVol);
         });
       }
       break;
@@ -920,6 +952,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
       int prescale=flags.getInt("prescale",0);
       bool noExtMacros=flags.getBool("noExtMacros",false);
       bool fbAllOps=flags.getBool("fbAllOps",false);
+      int ssgVol=flags.getInt("ssgVol",128);
+      int fmVol=flags.getInt("fmVol",256);
 
       ImGui::Text("Clock rate:");
       if (ImGui::RadioButton("8MHz (Arcade)",clockSel==0)) {
@@ -944,6 +978,18 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         altered=true;
       }
 
+      if (CWSliderInt("SSG Volume",&ssgVol,0,256)) {
+        if (ssgVol<0) ssgVol=0;
+        if (ssgVol>256) ssgVol=256;
+        altered=true;
+      } rightClickable
+
+      if (CWSliderInt("FM/ADPCM Volume",&fmVol,0,256)) {
+        if (fmVol<0) fmVol=0;
+        if (fmVol>256) fmVol=256;
+        altered=true;
+      } rightClickable
+
       if (type==DIV_SYSTEM_YM2608_EXT || type==DIV_SYSTEM_YM2608_CSM) {
         if (ImGui::Checkbox("Disable ExtCh FM macros (compatibility)",&noExtMacros)) {
           altered=true;
@@ -959,6 +1005,8 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
           flags.set("prescale",prescale);
           flags.set("noExtMacros",noExtMacros);
           flags.set("fbAllOps",fbAllOps);
+          flags.set("ssgVol",ssgVol);
+          flags.set("fmVol",fmVol);
         });
       }
       break;