diff --git a/MicroDexed.ino b/MicroDexed.ino
index 8d3f004..43b0894 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -39,7 +39,7 @@
 #include <effect_stereo_mono.h>
 #include <effect_mono_stereo.h>
 #include <effect_platervbstereo.h>
-#include <effect_compressor.h>
+//#include <effect_compressor.h>
 #include <template_mixer.hpp>
 #if NUM_DRUMS > 0
 #include "midinotes.h"
@@ -58,7 +58,7 @@
 AudioSynthDexed* MicroDexed[NUM_DEXED];
 AudioSynthEPiano ep(NUM_EPIANO_VOICES);
 
-AudioEffectCompressor2* compressor[NUM_DEXED];
+//AudioEffectCompressor2* compressor[NUM_DEXED];
 AudioSynthWaveform* chorus_modulator[NUM_DEXED];
 #if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
 AudioFilterBiquad* modchorus_filter[NUM_DEXED];
@@ -91,8 +91,8 @@ AudioEffectPlateReverb reverb;
 
 AudioMixer<5> master_mixer_r;
 AudioMixer<5> master_mixer_l;
-AudioEffectCompressor2 compressor_r;
-AudioEffectCompressor2 compressor_l;
+//AudioEffectCompressor2 compressor_r;
+//AudioEffectCompressor2 compressor_l;
 AudioAmplifier volume_r;
 AudioAmplifier volume_l;
 AudioEffectStereoMono stereo2mono;
@@ -155,10 +155,12 @@ AudioConnection patchCord[] = {
   { reverb_mixer_l, 0, reverb, 1 },
   { reverb, 0, master_mixer_r, MASTER_MIX_CH_REVERB },
   { reverb, 1, master_mixer_l, MASTER_MIX_CH_REVERB },
-  { master_mixer_r, compressor_r },
-  { master_mixer_l, compressor_l },
-  { compressor_r, volume_r },
-  { compressor_l, volume_l },
+//  { master_mixer_r, compressor_r },
+//  { master_mixer_l, compressor_l },
+//  { compressor_r, volume_r },
+//  { compressor_l, volume_l },
+  { master_mixer_r, volume_r },
+  { master_mixer_l, volume_l },
   { volume_r, 0, stereo2mono, 0 },
   { volume_l, 0, stereo2mono, 1 },
   { stereo2mono, 0, master_peak_r, 0 },
@@ -239,7 +241,7 @@ AudioConnection* dynamicConnections[NUM_DEXED * 17 + NUM_DRUMS * 4];
 #endif
 FLASHMEM void create_audio_dexed_chain(uint8_t instance_id) {
   MicroDexed[instance_id] = new AudioSynthDexed(MAX_NOTES / NUM_DEXED, SAMPLE_RATE);
-  compressor[instance_id] = new AudioEffectCompressor2();
+  //compressor[instance_id] = new AudioEffectCompressor2();
   mono2stereo[instance_id] = new AudioEffectMonoStereo();
   chorus_modulator[instance_id] = new AudioSynthWaveform();
 #if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
@@ -255,11 +257,14 @@ FLASHMEM void create_audio_dexed_chain(uint8_t instance_id) {
 #endif
   delay_mixer[instance_id] = new AudioMixer<2>();
 
-  dynamicConnections[nDynamic++] = new AudioConnection(*MicroDexed[instance_id], 0, *compressor[instance_id], 0);
-  dynamicConnections[nDynamic++] = new AudioConnection(*compressor[instance_id], 0, microdexed_peak_mixer, instance_id);
+  //dynamicConnections[nDynamic++] = new AudioConnection(*MicroDexed[instance_id], 0, *compressor[instance_id], 0);
+  //dynamicConnections[nDynamic++] = new AudioConnection(*compressor[instance_id], 0, microdexed_peak_mixer, instance_id);
+  //dynamicConnections[nDynamic++] = new AudioConnection(*compressor[instance_id], 0, *chorus_mixer[instance_id], 0);
+  //dynamicConnections[nDynamic++] = new AudioConnection(*compressor[instance_id], 0, *modchorus[instance_id], 0);
+  dynamicConnections[nDynamic++] = new AudioConnection(*MicroDexed[instance_id], 0, microdexed_peak_mixer, instance_id);
+  dynamicConnections[nDynamic++] = new AudioConnection(*MicroDexed[instance_id], 0, *chorus_mixer[instance_id], 0);
+  dynamicConnections[nDynamic++] = new AudioConnection(*MicroDexed[instance_id], 0, *modchorus[instance_id], 0);
 
-  dynamicConnections[nDynamic++] = new AudioConnection(*compressor[instance_id], 0, *chorus_mixer[instance_id], 0);
-  dynamicConnections[nDynamic++] = new AudioConnection(*compressor[instance_id], 0, *modchorus[instance_id], 0);
 #if MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
   dynamicConnections[nDynamic++] = new AudioConnection(*chorus_modulator[instance_id], 0, *modchorus_filter[instance_id], 0);
   dynamicConnections[nDynamic++] = new AudioConnection(*modchorus_filter[instance_id], 0, *modchorus[instance_id], 1);
diff --git a/addon/test-sysex/FB_test.syx b/addon/test-sysex/FB_test.syx
new file mode 100644
index 0000000..c32953c
Binary files /dev/null and b/addon/test-sysex/FB_test.syx differ