diff --git a/src/event.hxx b/src/event.hxx
index 92025a2..4eebfe4 100644
--- a/src/event.hxx
+++ b/src/event.hxx
@@ -38,6 +38,7 @@ namespace Event
   
   enum {
     MASTER_VOL,
+    MASTER_INPUT_VOL,
     MASTER_INPUT_TO,
     MASTER_INPUT_TO_ACTIVE,
     MASTER_RETURN,
@@ -122,11 +123,16 @@ class EventMasterVol : public EventBase
     int type() { return int(MASTER_VOL); }
     uint32_t size() { return sizeof(EventMasterVol); }
     float vol;
-    
-    EventMasterVol(float v)
-    {
-      vol = v;
-    }
+    EventMasterVol(float v = 0) : vol(v){}
+};
+
+class EventMasterInputVol : public EventBase
+{
+  public:
+    int type() { return int(MASTER_INPUT_VOL); }
+    uint32_t size() { return sizeof(EventMasterInputVol); }
+    float vol;
+    EventMasterInputVol(float v = 0) : vol(v){}
 };
 
 class EventMasterReturn : public EventBase
diff --git a/src/eventhandlerdsp.cxx b/src/eventhandlerdsp.cxx
index 581b1c8..8259b9b 100644
--- a/src/eventhandlerdsp.cxx
+++ b/src/eventhandlerdsp.cxx
@@ -60,6 +60,12 @@ void handleDspEvents()
             jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventMasterReturn) );
             //jack->getLogic()->trackSend( ev.track, ev.send, ev.value );
           } break; }
+        case Event::MASTER_INPUT_VOL: {
+          if ( availableRead >= sizeof(EventMasterVol) ) {
+            EventMasterVol ev(0);
+            jack_ringbuffer_read( rbToDsp, (char*)&ev, sizeof(EventMasterVol) );
+            jack->getLogic()->masterInputVol( ev.vol );
+          } break; }
         case Event::MASTER_INPUT_TO: {
           if ( availableRead >= sizeof(EventMasterInputTo) ) {
             EventMasterInputTo ev;
diff --git a/src/gmastertrack.cxx b/src/gmastertrack.cxx
index 30fdbc5..03e2374 100644
--- a/src/gmastertrack.cxx
+++ b/src/gmastertrack.cxx
@@ -17,6 +17,14 @@ static void gmastertrack_volume_callback(Fl_Widget *w, void *data)
   writeToDspRingbuffer( &e );
 }
 
+static void gmastertrack_inputVolume_callback(Fl_Widget *w, void *data)
+{
+  Avtk::Volume* b = (Avtk::Volume*)w;
+  float v = b->value();
+  EventMasterInputVol e( v );
+  writeToDspRingbuffer( &e );
+}
+
 static void gmastertrack_sidchainKeyButton_callback(Fl_Widget *w, void *data)
 {
   Avtk::LightButton* b = (Avtk::LightButton*)w;
@@ -129,6 +137,8 @@ GMasterTrack::GMasterTrack(int x, int y, int w, int h, const char* l ) :
   inputVolume.value(0.5);
   inputVolume.setOrientationHorizontal();
   
+  inputVolume.callback( gmastertrack_inputVolume_callback, 0 );
+  
   tapTempo.callback( gmastertrack_button_callback, &ID );
   metronomeButton.callback( gmastertrack_button_callback, 0 );
   
diff --git a/src/jack.cxx b/src/jack.cxx
index d237aca..9c87f27 100644
--- a/src/jack.cxx
+++ b/src/jack.cxx
@@ -347,6 +347,11 @@ void Jack::masterVolume(float vol)
   masterVol = vol;
 }
 
+void Jack::inputVolume(float v)
+{
+  inputVol = v * 2;
+}
+
 void Jack::inputTo(INPUT_TO to, float v)
 {
   switch ( to )
diff --git a/src/jack.hxx b/src/jack.hxx
index 9f0f33b..9c33b8a 100644
--- a/src/jack.hxx
+++ b/src/jack.hxx
@@ -59,7 +59,8 @@ class Jack
     /// writes MIDI messages to a MidiObserver's port
     void midiObserverWriteMIDI( int portIndex, unsigned char* data );
     
-    /// set the master volume
+    /// set the master i/o volume / sends
+    void inputVolume( float vol );
     void masterVolume( float vol );
     void inputTo(INPUT_TO to, float v);
     void inputToActive(INPUT_TO to, bool a);
@@ -89,8 +90,10 @@ class Jack
     // FX
     DBMeter* inputMeter;
     DBMeter* masterMeter;
-    float masterVol;
+    
     float inputVol;
+    float masterVol;
+    
     
     float inputToMixVol;
     float inputToSendVol;
diff --git a/src/logic.cxx b/src/logic.cxx
index 68b4d17..c30ecf9 100644
--- a/src/logic.cxx
+++ b/src/logic.cxx
@@ -20,6 +20,11 @@ void Logic::metronomeEnable(bool b)
   jack->getControllerUpdater()->metronomeEnable( b );
 }
 
+void Logic::masterInputVol( float v )
+{
+  jack->inputVolume( v );
+}
+
 void Logic::masterInputTo( Event::INPUT_TO inputTo, float v)
 {
   jack->inputTo( inputTo, v );
diff --git a/src/logic.hxx b/src/logic.hxx
index d2f477e..e18f4e8 100644
--- a/src/logic.hxx
+++ b/src/logic.hxx
@@ -28,6 +28,7 @@ class Logic
     
     void metronomeEnable(bool b);
     
+    void masterInputVol( float v );
     void masterInputTo( Event::INPUT_TO inputTo, float v);
     void masterInputToActive( Event::INPUT_TO inputTo, bool active);