diff --git a/src/engine/dispatchContainer.cpp b/src/engine/dispatchContainer.cpp
index 46320691..f72d665b 100644
--- a/src/engine/dispatchContainer.cpp
+++ b/src/engine/dispatchContainer.cpp
@@ -131,6 +131,7 @@ void DivDispatchContainer::fillBuf(size_t runtotal, size_t offset, size_t size)
   bool mustClear=false;
   for (int i=0; i<outs; i++) {
     if (bb[i]==NULL) {
+      logV("creating buf %d because it doesn't exist",i);
       bb[i]=blip_new(bbInLen);
       if (bb[i]==NULL) {
         logE("not enough memory!");
@@ -142,6 +143,7 @@ void DivDispatchContainer::fillBuf(size_t runtotal, size_t offset, size_t size)
       if (bbOut[i]==NULL) bbOut[i]=new short[bbInLen];
       memset(bbIn[i],0,bbInLen*sizeof(short));
       memset(bbOut[i],0,bbInLen*sizeof(short));
+      mustClear=true;
     }
   }
   if (mustClear) clear();
diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index b31aff56..73765d46 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -4150,10 +4150,13 @@ bool DivEngine::initAudioBackend() {
   want.rate=getConfInt("audioRate",44100);
   want.fragments=2;
   want.inChans=0;
-  want.outChans=2;
+  want.outChans=getConfInt("audioChans",2);
   want.outFormat=TA_AUDIO_FORMAT_F32;
   want.name="Furnace";
 
+  if (want.outChans<1) want.outChans=1;
+  if (want.outChans>16) want.outChans=16;
+
   output->setCallback(process,this);
 
   if (!output->init(want,got)) {
@@ -4164,6 +4167,13 @@ bool DivEngine::initAudioBackend() {
     return false;
   }
 
+  for (int i=0; i<got.outChans; i++) {
+    if (oscBuf[i]==NULL) {
+      oscBuf[i]=new float[32768];
+    }
+    memset(oscBuf[i],0,32768*sizeof(float));
+  }
+
   if (output->initMidi(false)) {
     midiIns=output->midiIn->listDevices();
     midiOuts=output->midiOut->listDevices();
@@ -4296,12 +4306,6 @@ bool DivEngine::init() {
     keyHit[i]=false;
   }
 
-  oscBuf[0]=new float[32768];
-  oscBuf[1]=new float[32768];
-
-  memset(oscBuf[0],0,32768*sizeof(float));
-  memset(oscBuf[1],0,32768*sizeof(float));
-
   initDispatch();
   renderSamples();
   reset();
@@ -4328,8 +4332,9 @@ bool DivEngine::quit() {
   logI("saving config.");
   saveConf();
   active=false;
-  delete[] oscBuf[0];
-  delete[] oscBuf[1];
+  for (int i=0; i<DIV_MAX_OUTPUTS; i++) {
+    if (oscBuf[i]!=NULL) delete[] oscBuf[i];
+  }
   if (yrw801ROM!=NULL) delete[] yrw801ROM;
   if (tg100ROM!=NULL) delete[] tg100ROM;
   if (mu5ROM!=NULL) delete[] mu5ROM;
diff --git a/src/engine/engine.h b/src/engine/engine.h
index 2eaf4127..bcf47853 100644
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@@ -493,7 +493,7 @@ class DivEngine {
     int dispatchOfChan[DIV_MAX_CHANS];
     int dispatchChanOfChan[DIV_MAX_CHANS];
     bool keyHit[DIV_MAX_CHANS];
-    float* oscBuf[2];
+    float* oscBuf[DIV_MAX_OUTPUTS];
     float oscSize;
     int oscReadPos, oscWritePos;
     int tickMult;
@@ -1123,7 +1123,6 @@ class DivEngine {
       curOrders(NULL),
       curPat(NULL),
       tempIns(NULL),
-      oscBuf{NULL,NULL},
       oscSize(1),
       oscReadPos(0),
       oscWritePos(0),
@@ -1142,6 +1141,7 @@ class DivEngine {
       memset(pitchTable,0,4096*sizeof(int));
       memset(sysDefs,0,256*sizeof(void*));
       memset(walked,0,8192);
+      memset(oscBuf,0,DIV_MAX_OUTPUTS*(sizeof(float*)));
 
       for (int i=0; i<256; i++) {
         sysFileMapFur[i]=DIV_SYSTEM_NULL;
diff --git a/src/engine/platform/vic20.cpp b/src/engine/platform/vic20.cpp
index 9564ffa2..3a4e2572 100644
--- a/src/engine/platform/vic20.cpp
+++ b/src/engine/platform/vic20.cpp
@@ -67,7 +67,6 @@ void DivPlatformVIC20::acquire(short** buf, size_t len) {
     short samp;
     vic_sound_machine_calculate_samples(vic,&samp,1,1,0,SAMP_DIVIDER);
     buf[0][h]=samp;
-    buf[1][h]=samp;
     for (int i=0; i<4; i++) {
       oscBuf[i]->data[oscBuf[i]->needle++]=vic->ch[i].out?(vic->volume<<11):0;
     }
diff --git a/src/engine/playback.cpp b/src/engine/playback.cpp
index 8696864c..54aef382 100644
--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@@ -1579,10 +1579,11 @@ void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsi
 
   if (!playing) {
     if (out!=NULL) {
-      // TODO: handle more than 2 outputs
       for (unsigned int i=0; i<size; i++) {
-        oscBuf[0][oscWritePos]=out[0][i];
-        oscBuf[1][oscWritePos]=out[1][i];
+        for (int j=0; j<outChans; j++) {
+          if (oscBuf[j]==NULL) continue;
+          oscBuf[j][oscWritePos]=out[j][i];
+        }
         if (++oscWritePos>=32768) oscWritePos=0;
       }
       oscSize=size;
@@ -1707,13 +1708,20 @@ void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsi
     volR*=disCont[i].dispatch->getPostAmp();
     if (disCont[i].dispatch->getOutputCount()>1) {
       for (size_t j=0; j<size; j++) {
-        out[0][j]+=((float)disCont[i].bbOut[0][j]/32768.0)*volL;
-        out[1][j]+=((float)disCont[i].bbOut[1][j]/32768.0)*volR;
+        int howManyToFill=MIN(outChans,disCont[i].dispatch->getOutputCount());
+        for (int k=0; k<howManyToFill; k++) {
+          // volL if even, volR if odd. if howManyToFill is odd and it is the last channel then ignore
+          const float whichVol=((howManyToFill&1) && (k==howManyToFill-1))?1.0:((k&1)?volR:volL);
+          out[k][j]+=((float)disCont[i].bbOut[k][j]/32768.0)*whichVol;
+        }
       }
     } else {
       for (size_t j=0; j<size; j++) {
-        out[0][j]+=((float)disCont[i].bbOut[0][j]/32768.0)*volL;
-        out[1][j]+=((float)disCont[i].bbOut[0][j]/32768.0)*volR;
+        for (int k=0; k<outChans; k++) {
+          // volL if even, volR if odd. if outChans is odd and it is the last channel then ignore
+          const float whichVol=((outChans&1) && (k==outChans-1))?1.0:((k&1)?volR:volL);
+          out[k][j]+=((float)disCont[i].bbOut[0][j]/32768.0)*whichVol;
+        }
       }
     }
   }
@@ -1739,19 +1747,25 @@ void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsi
     while (metroPos>=1) metroPos--;
   }
 
-  // TODO: handle more than 2 outputs
   for (unsigned int i=0; i<size; i++) {
-    oscBuf[0][oscWritePos]=out[0][i];
-    oscBuf[1][oscWritePos]=out[1][i];
+    for (int j=0; j<outChans; j++) {
+      if (oscBuf[j]==NULL) continue;
+      oscBuf[j][oscWritePos]=out[j][i];
+    }
     if (++oscWritePos>=32768) oscWritePos=0;
   }
   oscSize=size;
 
-  // TODO: handle more than 2 outputs
-  if (forceMono) {
+  if (forceMono && outChans>1) {
     for (size_t i=0; i<size; i++) {
-      out[0][i]=(out[0][i]+out[1][i])*0.5;
-      out[1][i]=out[0][i];
+      float chanSum=out[0][i];
+      for (int j=1; j<outChans; j++) {
+        chanSum=out[j][i];
+      }
+      out[0][i]=chanSum/outChans;
+      for (int j=1; j<outChans; j++) {
+        out[j][i]=out[0][i];
+      }
     }
   }
   if (clampSamples) {
diff --git a/src/gui/about.cpp b/src/gui/about.cpp
index fc8e6c47..95dded95 100644
--- a/src/gui/about.cpp
+++ b/src/gui/about.cpp
@@ -205,7 +205,13 @@ void FurnaceGUI::drawAbout() {
     float r=0;
     float g=0;
     float b=0;
-    float peakMix=settings.partyTime?((peak[0]+peak[1])*0.5):0.3;
+    float peakMix=settings.partyTime?0:0.3;
+    if (settings.partyTime) {
+      for (int j=0; j<e->getAudioDescGot().outChans; j++) {
+        peakMix+=peak[j];
+      }
+      peakMix/=e->getAudioDescGot().outChans;
+    }
     ImGui::ColorConvertHSVtoRGB(aboutHue,1.0,0.25+MIN(0.75f,peakMix*0.75f),r,g,b);
     dl->AddRectFilled(ImVec2(0,0),ImVec2(canvasW,canvasH),0xff000000);
     bool skip=false;
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 59d23f2e..72195bb4 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -6095,8 +6095,7 @@ FurnaceGUI::FurnaceGUI():
 
   memset(willExport,1,DIV_MAX_CHIPS*sizeof(bool));
 
-  peak[0]=0;
-  peak[1]=0;
+  memset(peak,0,DIV_MAX_OUTPUTS*sizeof(float));
 
   opMaskTransposeNote.note=true;
   opMaskTransposeNote.ins=false;
diff --git a/src/gui/gui.h b/src/gui/gui.h
index 88c30651..6ed7f2d3 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -1172,6 +1172,7 @@ class FurnaceGUI {
     int mainFontSize, patFontSize, iconSize;
     int audioEngine;
     int audioQuality;
+    int audioChans;
     int arcadeCore;
     int ym2612Core;
     int snCore;
@@ -1306,6 +1307,7 @@ class FurnaceGUI {
       iconSize(16),
       audioEngine(DIV_AUDIO_SDL),
       audioQuality(0),
+      audioChans(2),
       arcadeCore(0),
       ym2612Core(0),
       snCore(0),
@@ -1458,7 +1460,7 @@ class FurnaceGUI {
   bool keepLoopAlive, orderScrollLocked, orderScrollTolerance, dragMobileMenu, dragMobileEditButton;
   FurnaceGUIWindows curWindow, nextWindow, curWindowLast;
   std::atomic<FurnaceGUIWindows> curWindowThreadSafe;
-  float peak[2];
+  float peak[DIV_MAX_OUTPUTS];
   float patChanX[DIV_MAX_CHANS+1];
   float patChanSlideY[DIV_MAX_CHANS+1];
   float lastPatternWidth, longThreshold;
diff --git a/src/gui/osc.cpp b/src/gui/osc.cpp
index 7791e8e5..7f414221 100644
--- a/src/gui/osc.cpp
+++ b/src/gui/osc.cpp
@@ -49,14 +49,19 @@ void FurnaceGUI::readOsc() {
   int oscReadPos=(writePos-winSize)&0x7fff;
   for (int i=0; i<512; i++) {
     int pos=(oscReadPos+(i*winSize/512))&0x7fff;
-    oscValues[i]=(e->oscBuf[0][pos]+e->oscBuf[1][pos])*0.5f;
+    oscValues[i]=0;
+    for (int j=0; j<e->getAudioDescGot().outChans; j++) {
+      oscValues[i]+=e->oscBuf[j][pos];
+    }
+    oscValues[i]/=e->getAudioDescGot().outChans;
+
     if (oscValues[i]>0.001f || oscValues[i]<-0.001f) {
       WAKE_UP;
     }
   }
 
   float peakDecay=0.05f*60.0f*ImGui::GetIO().DeltaTime;
-  for (int i=0; i<2; i++) {
+  for (int i=0; i<e->getAudioDescGot().outChans; i++) {
     peak[i]*=1.0-peakDecay;
     if (peak[i]<0.0001) {
       peak[i]=0.0;
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index 2b670184..2b12c430 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -73,6 +73,22 @@ const char* audioBackends[]={
   "SDL"
 };
 
+const bool isProAudio[]={
+  true,
+  false
+};
+
+const char* nonProAudioOuts[]={
+  "Mono",
+  "Stereo",
+  "What?",
+  "Quadraphonic",
+  "What?",
+  "5.1 Surround",
+  "What?",
+  "7.1 Surround"
+};
+
 const char* audioQualities[]={
   "High",
   "Low"
@@ -192,6 +208,11 @@ const char* specificControls[18]={
     settings.audioBufSize=x; \
   }
 
+#define CHANS_SELECTABLE(x) \
+  if (ImGui::Selectable(nonProAudioOuts[x-1],settings.audioChans==x)) { \
+    settings.audioChans=x; \
+  }
+
 #define UI_COLOR_CONFIG(what,label) \
   if (ImGui::ColorEdit4(label "##CC_" #what,(float*)&uiColors[what])) { \
     applyUISettings(false); \
@@ -676,9 +697,16 @@ void FurnaceGUI::drawSettings() {
         ImVec2 settingsViewSize=ImGui::GetContentRegionAvail();
         settingsViewSize.y-=ImGui::GetFrameHeight()+ImGui::GetStyle().WindowPadding.y;
         if (ImGui::BeginChild("SettingsView",settingsViewSize)) {
+#ifdef HAVE_JACK
           ImGui::Text("Backend");
           ImGui::SameLine();
-          ImGui::Combo("##Backend",&settings.audioEngine,audioBackends,2);
+          int prevAudioEngine=settings.audioEngine;
+          if (ImGui::Combo("##Backend",&settings.audioEngine,audioBackends,2)) {
+            if (settings.audioEngine!=prevAudioEngine) {
+              if (!isProAudio[settings.audioEngine]) settings.audioChans=2;
+            }
+          }
+#endif
 
           ImGui::Text("Device");
           ImGui::SameLine();
@@ -711,6 +739,27 @@ void FurnaceGUI::drawSettings() {
             ImGui::EndCombo();
           }
 
+          if (isProAudio[settings.audioEngine]) {
+            ImGui::Text("Outputs");
+            ImGui::SameLine();
+            if (ImGui::InputInt("##AudioChansI",&settings.audioChans,1,1)) {
+              if (settings.audioChans<1) settings.audioChans=1;
+              if (settings.audioChans>16) settings.audioChans=16;
+            }
+          } else {
+            ImGui::Text("Channels");
+            ImGui::SameLine();
+            String chStr=(settings.audioChans<1 || settings.audioChans>8)?"What?":nonProAudioOuts[settings.audioChans-1];
+            if (ImGui::BeginCombo("##AudioChans",chStr.c_str())) {
+              CHANS_SELECTABLE(1);
+              CHANS_SELECTABLE(2);
+              CHANS_SELECTABLE(4);
+              CHANS_SELECTABLE(6);
+              CHANS_SELECTABLE(8);
+              ImGui::EndCombo();
+            }
+          }
+
           ImGui::Text("Buffer size");
           ImGui::SameLine();
           String bs=fmt::sprintf("%d (latency: ~%.1fms)",settings.audioBufSize,2000.0*(double)settings.audioBufSize/(double)MAX(1,settings.audioRate));
@@ -757,8 +806,8 @@ void FurnaceGUI::drawSettings() {
           TAAudioDesc& audioWant=e->getAudioDescWant();
           TAAudioDesc& audioGot=e->getAudioDescGot();
 
-          ImGui::Text("want: %d samples @ %.0fHz",audioWant.bufsize,audioWant.rate);
-          ImGui::Text("got: %d samples @ %.0fHz",audioGot.bufsize,audioGot.rate);
+          ImGui::Text("want: %d samples @ %.0fHz (%d channels)",audioWant.bufsize,audioWant.rate,audioWant.outChans);
+          ImGui::Text("got: %d samples @ %.0fHz (%d channels)",audioGot.bufsize,audioGot.rate,audioWant.outChans);
 
           ImGui::Separator();
 
@@ -2343,6 +2392,7 @@ void FurnaceGUI::syncSettings() {
   settings.iconSize=e->getConfInt("iconSize",16);
   settings.audioEngine=(e->getConfString("audioEngine","SDL")=="SDL")?1:0;
   settings.audioDevice=e->getConfString("audioDevice","");
+  settings.audioChans=e->getConfInt("audioChans",2);
   settings.midiInDevice=e->getConfString("midiInDevice","");
   settings.midiOutDevice=e->getConfString("midiOutDevice","");
   settings.c163Name=e->getConfString("c163Name",DIV_C163_DEFAULT_NAME);
@@ -2476,6 +2526,7 @@ void FurnaceGUI::syncSettings() {
   clampSetting(settings.audioQuality,0,1);
   clampSetting(settings.audioBufSize,32,4096);
   clampSetting(settings.audioRate,8000,384000);
+  clampSetting(settings.audioChans,1,16);
   clampSetting(settings.arcadeCore,0,1);
   clampSetting(settings.ym2612Core,0,1);
   clampSetting(settings.snCore,0,1);
@@ -2643,6 +2694,7 @@ void FurnaceGUI::commitSettings() {
   e->setConf("audioQuality",settings.audioQuality);
   e->setConf("audioBufSize",settings.audioBufSize);
   e->setConf("audioRate",settings.audioRate);
+  e->setConf("audioChans",settings.audioChans);
   e->setConf("arcadeCore",settings.arcadeCore);
   e->setConf("ym2612Core",settings.ym2612Core);
   e->setConf("snCore",settings.snCore);
diff --git a/src/gui/volMeter.cpp b/src/gui/volMeter.cpp
index d058e31f..5233a69e 100644
--- a/src/gui/volMeter.cpp
+++ b/src/gui/volMeter.cpp
@@ -51,7 +51,8 @@ void FurnaceGUI::drawVolMeter() {
     ImU32 lowColor=ImGui::GetColorU32(uiColors[GUI_COLOR_VOLMETER_LOW]);
     if (ImGui::ItemAdd(rect,ImGui::GetID("volMeter"))) {
       ImGui::RenderFrame(rect.Min,rect.Max,ImGui::GetColorU32(ImGuiCol_FrameBg),true,style.FrameRounding);
-      for (int i=0; i<2; i++) {
+      int outChans=e->getAudioDescGot().outChans;
+      for (int i=0; i<outChans; i++) {
         float logPeak=(20*log10(peak[i])/36.0);
         if (logPeak==NAN) logPeak=0.0;
         if (logPeak<-1.0) logPeak=-1.0;
@@ -66,10 +67,10 @@ void FurnaceGUI::drawVolMeter() {
         ImRect s;
         if (aspectRatio) {
           s=ImRect(
-            ImLerp(rect.Min,rect.Max,ImVec2(0,float(i)*0.5)),
-            ImLerp(rect.Min,rect.Max,ImVec2(logPeak,float(i+1)*0.5))
+            ImLerp(rect.Min,rect.Max,ImVec2(0,float(i)/outChans)),
+            ImLerp(rect.Min,rect.Max,ImVec2(logPeak,float(i+1)/outChans))
           );
-          if (i==0) s.Max.y-=dpiScale;
+          if (i!=(outChans-1)) s.Max.y-=dpiScale;
           if (isClipping) {
             dl->AddRectFilled(s.Min,s.Max,ImGui::GetColorU32(uiColors[GUI_COLOR_VOLMETER_PEAK]));
           } else {
@@ -77,10 +78,10 @@ void FurnaceGUI::drawVolMeter() {
           }
         } else {
           s=ImRect(
-            ImLerp(rect.Min,rect.Max,ImVec2(float(i)*0.5,1.0-logPeak)),
-            ImLerp(rect.Min,rect.Max,ImVec2(float(i+1)*0.5,1.0))
+            ImLerp(rect.Min,rect.Max,ImVec2(float(i)/outChans,1.0-logPeak)),
+            ImLerp(rect.Min,rect.Max,ImVec2(float(i+1)/outChans,1.0))
           );
-          if (i==0) s.Max.x-=dpiScale;
+          if (i==(outChans-1)) s.Max.x-=dpiScale;
           if (isClipping) {
             dl->AddRectFilled(s.Min,s.Max,ImGui::GetColorU32(uiColors[GUI_COLOR_VOLMETER_PEAK]));
           } else {