Removed master gain. Using gain from Dexed as master gain.

Using "global" pan for all audio cards.
Small fixes.

MicroDexed.ino

@@ -61,30 +61,24 @@ AudioConnection          patchCord3(delay1, 0, mixer1, 1);
 AudioConnection          patchCord4(delay1, 0, mixer2, 2);
 AudioConnection          patchCord5(mixer1, delay1);
 AudioConnection          patchCord6(mixer1, 0, mixer2, 1);
+AudioAmplifier           volume_r;
+AudioAmplifier           volume_l;
+AudioConnection          patchCord7(mixer2, volume_r);
+AudioConnection          patchCord8(mixer2, volume_l);
 #if defined(TEENSY_AUDIO_BOARD)
 AudioOutputI2S           i2s1;
-AudioConnection          patchCord7(mixer2, 0, i2s1, 0);
+AudioConnection          patchCord9(volume_r, 0, i2s1, 0);
-AudioConnection          patchCord8(mixer2, 0, i2s1, 1);
+AudioConnection          patchCord10(volume_l, 0, i2s1, 1);
 AudioControlSGTL5000     sgtl5000_1;
 #elif defined(TGA_AUDIO_BOARD)
 AudioOutputI2S           i2s1;
-AudioAmplifier           volume_r;
-AudioAmplifier           volume_l;
-AudioConnection          patchCord7(mixer2, volume_r);
-AudioConnection          patchCord8(mixer2, volume_l);
 AudioConnection          patchCord9(volume_r, 0, i2s1, 1);
 AudioConnection          patchCord10(volume_l, 0, i2s1, 0);
 AudioControlWM8731master wm8731_1;
 #else
 AudioOutputPT8211        pt8211_1;
-AudioAmplifier           volume_master;
+AudioConnection          patchCord9(volume_r, 0, pt8211_1, 0);
-AudioAmplifier           volume_r;
+AudioConnection          patchCord10(volume_l, 0, pt8211_1, 1);
-AudioAmplifier           volume_l;
-AudioConnection          patchCord7(mixer2, 0, volume_master, 0);
-AudioConnection          patchCord8(volume_master, volume_r);
-AudioConnection          patchCord9(volume_master, volume_l);
-AudioConnection          patchCord10(volume_r, 0, pt8211_1, 0);
-AudioConnection          patchCord11(volume_l, 0, pt8211_1, 1);
 #endif
 
 Dexed* dexed = new Dexed(SAMPLE_RATE);
@@ -157,8 +151,8 @@ void setup()
 
 #ifdef TEENSY_AUDIO_BOARD
   sgtl5000_1.enable();
-  //sgtl5000_1.dacVolumeRamp();
+  sgtl5000_1.dacVolumeRamp();
-  sgtl5000_1.dacVolumeRampLinear();
+  //sgtl5000_1.dacVolumeRampLinear();
   //sgtl5000_1.dacVolumeRampDisable();
   sgtl5000_1.unmuteHeadphone();
   sgtl5000_1.unmuteLineout();
@@ -182,8 +176,6 @@ void setup()
   Serial.println(F("PT8211 enabled."));
 #endif
 
-  set_volume(configuration.vol, configuration.pan);
-
   // start SD card
   SPI.setMOSI(SDCARD_MOSI_PIN);
   SPI.setSCK(SDCARD_SCK_PIN);
@@ -222,6 +214,10 @@ void setup()
     }
 #endif
 
+    // load default SYSEX data
+    load_sysex(configuration.bank, configuration.voice);
+  }
+
   // Init effects
   delay1.delay(0, mapfloat(effect_delay_feedback, 0, ENC_DELAY_TIME_STEPS, 0.0, DELAY_MAX_TIME));
   // mixer1 is the feedback-adding mixer, mixer2 the whole delay (with/without feedback) mixer
@@ -234,9 +230,8 @@ void setup()
   dexed->fx.Reso = 1.0 - float(effect_filter_resonance) / ENC_FILTER_RES_STEPS;
   dexed->fx.Cutoff = 1.0 - float(effect_filter_cutoff) / ENC_FILTER_CUT_STEPS;
 
-    // load default SYSEX data
+  // set initial volume and pan (read from EEPROM)
-    load_sysex(configuration.bank, configuration.voice);
+  set_volume(configuration.vol, configuration.pan);
-  }
 
 #ifdef I2C_DISPLAY
   enc[0].write(map(configuration.vol * 100, 0, 100, 0, ENC_VOL_STEPS));
@@ -721,14 +716,11 @@ void set_volume(float v, float p)
   Serial.println(pow(configuration.vol * cosf( configuration.pan * PI / 2), VOLUME_CURVE), 3);
 #endif
 
+  dexed->fx.Gain = v;
+
   // http://files.csound-tutorial.net/floss_manual/Release03/Cs_FM_03_ScrapBook/b-panning-and-spatialization.html
-#ifdef TEENSY_AUDIO_BOARD
-  sgtl5000_1.dacVolume(pow(v * sinf(p * PI / 2), VOLUME_CURVE), pow(v * cosf(p * PI / 2), VOLUME_CURVE));
-#else
-  volume_master.gain(VOLUME_CURVE);
   volume_r.gain(sinf(p * PI / 2));
   volume_l.gain(cosf(p * PI / 2));
-#endif
 }
 
 // https://www.dr-lex.be/info-stuff/volumecontrols.html#table1