diff --git a/MicroDexed.ino b/MicroDexed.ino
index 818a0b7..ed15cb8 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -91,6 +91,10 @@ AudioAmplifier*                 drum_volume[NUM_DRUMS];
 AudioEffectMonoStereo*          drum_mono2stereo[NUM_DRUMS];
 AudioMixer4                     drum_mixer_r;
 AudioMixer4                     drum_mixer_l;
+#ifdef USE_FX
+AudioMixer4                     drum_reverb_send_mixer_r;
+AudioMixer4                     drum_reverb_send_mixer_l;
+#endif
 #endif
 
 // Audio chain tail
@@ -164,8 +168,8 @@ AudioConnection          patchCord20(audio_thru_mixer_l, 0, i2s1, 1);
 
 #if NUM_DRUMS > 0
 #ifdef USE_FX
-AudioConnection          patchCord21(drum_mixer_r, 0, reverb_mixer_r, 2);
-AudioConnection          patchCord22(drum_mixer_l, 0, reverb_mixer_l, 2);
+AudioConnection          patchCord21(drum_reverb_send_mixer_r, 0, reverb_mixer_r, 2);
+AudioConnection          patchCord22(drum_reverb_send_mixer_l, 0, reverb_mixer_l, 2);
 AudioConnection          patchCord23(drum_mixer_r, 0, master_mixer_r, 2);
 AudioConnection          patchCord24(drum_mixer_l, 0, master_mixer_l, 2);
 #else
@@ -179,9 +183,9 @@ AudioConnection          patchCord22(drum_mixer_l, 0, master_mixer_l, 2);
 //
 uint8_t nDynamic = 0;
 #if defined(USE_FX) && MOD_FILTER_OUTPUT != MOD_NO_FILTER_OUTPUT
-AudioConnection* dynamicConnections[NUM_DEXED * 16 + NUM_DRUMS * 4 ];
+AudioConnection* dynamicConnections[NUM_DEXED * 16 + NUM_DRUMS * 6 ];
 #elif defined(USE_FX) && MOD_FILTER_OUTPUT == MOD_NO_FILTER_OUTPUT
-AudioConnection* dynamicConnections[NUM_DEXED * 15 + NUM_DRUMS * 4];
+AudioConnection* dynamicConnections[NUM_DEXED * 15 + NUM_DRUMS * 6];
 #else
 AudioConnection* dynamicConnections[NUM_DEXED * 4 + NUM_DRUMS * 4];
 #endif
@@ -248,6 +252,10 @@ void create_audio_drum_chain(uint8_t instance_id)
   dynamicConnections[nDynamic++] = new AudioConnection(*drum_volume[instance_id], 0, *drum_mono2stereo[instance_id], 0);
   dynamicConnections[nDynamic++] = new AudioConnection(*drum_mono2stereo[instance_id], 0, drum_mixer_r, instance_id);
   dynamicConnections[nDynamic++] = new AudioConnection(*drum_mono2stereo[instance_id], 1, drum_mixer_l, instance_id);
+#ifdef USE_FX
+  dynamicConnections[nDynamic++] = new AudioConnection(*drum_mono2stereo[instance_id], 0, drum_reverb_send_mixer_r, instance_id);
+  dynamicConnections[nDynamic++] = new AudioConnection(*drum_mono2stereo[instance_id], 1, drum_reverb_send_mixer_l, instance_id);
+#endif
 
 #ifdef DEBUG
   Serial.print(F("Drum-Instance: "));
@@ -293,7 +301,7 @@ uint8_t seqsteptimer = 0;
 uint32_t seqtimer_old = 0;
 bool seq_running = false;
 bool seq_recording = false;
-uint8_t seq_note_in; 
+uint8_t seq_note_in;
 //uint8_t seqdata[1][16]={48,48,54,48,49,54,54,48,54,54,48,54,49,54,54,54};
 //uint8_t seqdata[1][16]={72,72,78,72,75,78,78,72,78,78,72,78,75,78,78,78};
 uint8_t seqdata[3][16] = {72, 72, 0, 72, 75, 0, 0, 72, 0, 0, 72, 0, 75, 0, 0, 0,
@@ -620,11 +628,11 @@ void loop()
       if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_sequencer)) {
 
 
-    //write to sequencer if in sequencer menu (step recording and live recording)
-    if (seq_note_in>0 && seq_recording == true){
-   seqdata[active_seq_track][seqsteptimer]=seq_note_in;
-   seq_note_in=0;
-         }
+        //write to sequencer if in sequencer menu (step recording and live recording)
+        if (seq_note_in > 0 && seq_recording == true) {
+          seqdata[active_seq_track][seqsteptimer] = seq_note_in;
+          seq_note_in = 0;
+        }
         lcd.setCursor(seqsteptimer, 1);
         lcd.print("X");
         if (seqsteptimer == 0) {
@@ -802,6 +810,8 @@ void handleNoteOn(byte inChannel, byte inNumber, byte inVelocity)
         uint8_t slot = drum_get_slot(drum_config[d].type);
         drum_volume[slot]->gain(pseudo_log_curve(mapfloat(inVelocity, 0, 127, drum_config[d].vol_min, drum_config[d].vol_max)));
         drum_mono2stereo[slot]->panorama(drum_config[d].pan);
+        drum_reverb_send_mixer_r.gain(slot, pseudo_log_curve(mapfloat(inVelocity, 0, 127, drum_config[d].vol_min, drum_config[d].vol_max)));
+        drum_reverb_send_mixer_l.gain(slot, pseudo_log_curve(mapfloat(inVelocity, 0, 127, drum_config[d].vol_min, drum_config[d].vol_max)));
         Drum[slot]->play(drum_config[d].filename);
         break;
       }
diff --git a/dexed_sd.cpp b/dexed_sd.cpp
index c22eb38..8891a40 100644
--- a/dexed_sd.cpp
+++ b/dexed_sd.cpp
@@ -51,7 +51,9 @@ bool load_sd_voice(uint8_t b, uint8_t v, uint8_t instance_id)
     get_bank_name(b, bank_name, sizeof(bank_name));
     sprintf(filename, "/%d/%s.syx", b, bank_name);
 
+    AudioNoInterrupts();
     sysex = SD.open(filename);
+    AudioInterrupts();
     if (!sysex)
     {
 #ifdef DEBUG
@@ -81,8 +83,9 @@ bool load_sd_voice(uint8_t b, uint8_t v, uint8_t instance_id)
 #endif
 
       configuration.dexed[instance_id].transpose = MicroDexed[instance_id]->getTranspose();
-
+      AudioNoInterrupts();
       sysex.close();
+      AudioInterrupts();
 
       uint8_t data_copy[155];
       MicroDexed[instance_id]->getVoiceData(data_copy);
@@ -94,7 +97,9 @@ bool load_sd_voice(uint8_t b, uint8_t v, uint8_t instance_id)
     else
       Serial.println(F("E : Cannot load voice data"));
 #endif
+    AudioNoInterrupts();
     sysex.close();
+    AudioInterrupts();
   }
 
   return (false);
@@ -115,7 +120,9 @@ bool save_sd_voice(uint8_t b, uint8_t v, uint8_t instance_id)
     get_bank_name(b, bank_name, sizeof(bank_name));
     sprintf(filename, "/%d/%s.syx", b, bank_name);
 
+    AudioNoInterrupts();
     sysex = SD.open(filename, FILE_WRITE);
+    AudioInterrupts();
     if (!sysex)
     {
 #ifdef DEBUG
@@ -140,7 +147,9 @@ bool save_sd_voice(uint8_t b, uint8_t v, uint8_t instance_id)
       Serial.print(voice_name);
       Serial.println(F("]"));
 #endif
+      AudioNoInterrupts();
       sysex.close();
+      AudioInterrupts();
 
       return (true);
     }
@@ -148,7 +157,9 @@ bool save_sd_voice(uint8_t b, uint8_t v, uint8_t instance_id)
     else
       Serial.println(F("E : Cannot load voice data"));
 #endif
+    AudioNoInterrupts();
     sysex.close();
+    AudioInterrupts();
   }
 
   return (false);
@@ -160,6 +171,7 @@ bool get_sd_voice(File sysex, uint8_t voice_number, uint8_t* data)
   int32_t bulk_checksum_calc = 0;
   int8_t bulk_checksum;
 
+  AudioNoInterrupts();
   if (sysex.size() != 4104) // check sysex size
   {
 #ifdef DEBUG
@@ -209,6 +221,7 @@ bool get_sd_voice(File sysex, uint8_t voice_number, uint8_t* data)
     bulk_checksum_calc -= d;
   }
   bulk_checksum_calc &= 0x7f;
+  AudioInterrupts();
 
 #ifdef DEBUG
   Serial.print(F("Bulk checksum : 0x"));
@@ -240,6 +253,7 @@ bool put_sd_voice(File sysex, uint8_t voice_number, uint8_t* data)
   uint16_t n;
   int32_t bulk_checksum_calc = 0;
 
+  AudioNoInterrupts();
   sysex.seek(0);
 
   if (sysex.size() != 4104) // check sysex size
@@ -292,6 +306,7 @@ bool put_sd_voice(File sysex, uint8_t voice_number, uint8_t* data)
   }
   sysex.seek(4102); // Bulk checksum
   sysex.write(bulk_checksum_calc & 0x7f);
+  AudioInterrupts();
 
 #ifdef DEBUG
   Serial.print(F("Bulk checksum : 0x"));
@@ -319,6 +334,7 @@ bool save_sd_bank(const char* bank_filename, uint8_t* data)
     // first remove old bank
     sscanf(bank_filename, "/%d/%s", &bank_number, tmp);
     sprintf(tmp, "/%d", bank_number);
+    AudioNoInterrupts();
     root = SD.open(tmp);
     while (42 == 42)
     {
@@ -365,6 +381,7 @@ bool save_sd_bank(const char* bank_filename, uint8_t* data)
     root = SD.open(bank_filename, FILE_WRITE);
     root.write(data, 4104);
     root.close();
+    AudioInterrupts();
 #ifdef DEBUG
     Serial.println(F(" done."));
 #endif
@@ -393,6 +410,7 @@ bool load_sd_voiceconfig(int8_t vc, uint8_t instance_id)
     sprintf(filename, "/%s/%s%d.syx", VOICE_CONFIG_PATH, VOICE_CONFIG_NAME, vc);
 
     // first check if file exists...
+    AudioNoInterrupts();
     if (SD.exists(filename))
     {
       // ... and if: load
@@ -407,12 +425,14 @@ bool load_sd_voiceconfig(int8_t vc, uint8_t instance_id)
         get_sd_data(sysex, 0x42, (uint8_t*)&configuration.dexed[instance_id]);
         set_voiceconfig_params(instance_id);
         sysex.close();
+        AudioInterrupts();
 
         return (true);
       }
 #ifdef DEBUG
       else
       {
+        AudioInterrupts();
         Serial.print(F("E : Cannot open "));
         Serial.print(filename);
         Serial.println(F(" on SD."));
@@ -452,15 +472,18 @@ bool save_sd_voiceconfig(uint8_t vc, uint8_t instance_id)
     Serial.println(filename);
 #endif
 
+    AudioNoInterrupts();
     sysex = SD.open(filename, FILE_WRITE);
     if (sysex)
     {
       if (write_sd_data(sysex, 0x42, (uint8_t*)&configuration.dexed[instance_id], sizeof(configuration.dexed[instance_id])))
       {
         sysex.close();
+        AudioInterrupts();
         return (true);
       }
       sysex.close();
+      AudioInterrupts();
     }
     else
     {
@@ -493,6 +516,7 @@ bool load_sd_fx(int8_t fx)
     sprintf(filename, "/%s/%s%d.syx", FX_CONFIG_PATH, FX_CONFIG_NAME, fx);
 
     // first check if file exists...
+    AudioNoInterrupts();
     if (SD.exists(filename))
     {
       // ... and if: load
@@ -507,12 +531,14 @@ bool load_sd_fx(int8_t fx)
         get_sd_data(sysex, 0x43, (uint8_t*)&configuration.fx);
         set_fx_params();
         sysex.close();
+        AudioInterrupts();
 
         return (true);
       }
 #ifdef DEBUG
       else
       {
+        AudioInterrupts();
         Serial.print(F("E : Cannot open "));
         Serial.print(filename);
         Serial.println(F(" on SD."));
@@ -550,15 +576,18 @@ bool save_sd_fx(uint8_t fx)
     Serial.println(filename);
 #endif
 
+    AudioNoInterrupts();
     sysex = SD.open(filename, FILE_WRITE);
     if (sysex)
     {
       if (write_sd_data(sysex, 0x43, (uint8_t*)&configuration.fx, sizeof(configuration.fx)))
       {
         sysex.close();
+        AudioInterrupts();
         return (true);
       }
       sysex.close();
+      AudioInterrupts();
     }
     else
     {
@@ -592,6 +621,7 @@ bool load_sd_performance(int8_t p)
     sprintf(filename, "/%s/%s%d.syx", PERFORMANCE_CONFIG_PATH, PERFORMANCE_CONFIG_NAME, p);
 
     // first check if file exists...
+    AudioNoInterrupts();
     if (SD.exists(filename))
     {
       // ... and if: load
@@ -605,6 +635,7 @@ bool load_sd_performance(int8_t p)
       {
         get_sd_data(sysex, 0x44, (uint8_t*)&configuration.performance);
         sysex.close();
+        AudioInterrupts();
 
         for (uint8_t instance_id = 0; instance_id < NUM_DEXED; instance_id++)
         {
@@ -657,15 +688,18 @@ bool save_sd_performance(uint8_t p)
     Serial.println(filename);
 #endif
 
+    AudioNoInterrupts();
     sysex = SD.open(filename, FILE_WRITE);
     if (sysex)
     {
       if (write_sd_data(sysex, 0x44, (uint8_t*)&configuration.performance, sizeof(configuration.performance)))
       {
         sysex.close();
+        AudioInterrupts();
         return (true);
       }
       sysex.close();
+      AudioInterrupts();
     }
     else
     {
@@ -695,6 +729,7 @@ bool get_sd_data(File sysex, uint8_t format, uint8_t* conf)
   Serial.println(F(" bytes."));
 #endif
 
+  AudioNoInterrupts();
   if (sysex.read() != 0xf0)  // check sysex start-byte
   {
 #ifdef DEBUG
@@ -767,6 +802,7 @@ bool get_sd_data(File sysex, uint8_t format, uint8_t* conf)
     uint8_t d = sysex.read();
     *(conf++) = d;
   }
+  AudioInterrupts();
 
 #ifdef DEBUG
   Serial.println(F("SD data loaded."));
@@ -786,6 +822,7 @@ bool write_sd_data(File sysex, uint8_t format, uint8_t* data, uint16_t len)
 #endif
 
   // write sysex start
+  AudioNoInterrupts();
   sysex.write(0xf0);
 #ifdef DEBUG
   Serial.println(F("Write SYSEX start:    0xf0"));
@@ -820,6 +857,8 @@ bool write_sd_data(File sysex, uint8_t format, uint8_t* data, uint16_t len)
 #endif
   // write sysex end
   sysex.write(0xf7);
+  AudioInterrupts();
+
 #ifdef DEBUG
   Serial.println(F("Write SYSEX end:      0xf7"));
 #endif
@@ -922,6 +961,7 @@ bool get_voice_name(uint8_t b, uint8_t v, char* name, uint8_t len)
 #endif
 
     // try to open directory
+    AudioNoInterrupts();
     sysex = SD.open(filename);
     if (!sysex)
       return (false);
@@ -941,6 +981,7 @@ bool get_voice_name(uint8_t b, uint8_t v, char* name, uint8_t len)
 #endif
 
     sysex.close();
+    AudioInterrupts();
 
     return (true);
   }
@@ -964,6 +1005,7 @@ bool get_voice_by_bank_name(uint8_t b, const char* bank_name, uint8_t v, char* v
 #endif
 
     // try to open directory
+    AudioNoInterrupts();
     sysex = SD.open(filename);
     if (!sysex)
       return (false);
@@ -985,6 +1027,7 @@ bool get_voice_by_bank_name(uint8_t b, const char* bank_name, uint8_t v, char* v
 #endif
 
     sysex.close();
+    AudioInterrupts();
 
     return (true);
   }
diff --git a/drums.h b/drums.h
index 7683bf6..437c1ac 100644
--- a/drums.h
+++ b/drums.h
@@ -36,6 +36,7 @@ typedef struct drum_config_s {
   float32_t pan;      // Panorama (-1.0 - +1.0)
   float32_t vol_max;  // max. Volume (0.0 - 1.0)
   float32_t vol_min;  // min. Volume (0.0 - 1.0, should be <= vol_max)
+  float32_t reverb_send; // how much signal to send to the reverb (0.0 - 1.0)
 } drum_config_t;
 
 #define NUM_DRUMCONFIG 15
@@ -47,6 +48,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "B",
     0.0,
     0.8,
+    0.0,
     0.0
   },
   {
@@ -56,6 +58,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "C",
     -0.4,
     0.6,
+    0.0,
     0.0
   },
   {
@@ -65,7 +68,8 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "S",
     0.2,
     0.6,
-    0.2
+    0.2,
+    0.0
   },
   {
     DRUM_HIHAT,
@@ -74,6 +78,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "h",
     0.8,
     0.2,
+    0.0,
     0.0
   },
   {
@@ -83,6 +88,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "h",
     0.8,
     0.2,
+    0.0,
     0.0
   },
   {
@@ -92,6 +98,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "H",
     0.8,
     0.2,
+    0.0,
     0.0
   },
   {
@@ -101,6 +108,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "T",
     -0.7,
     0.8,
+    0.0,
     0.0
   },
   {
@@ -110,6 +118,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "T",
     -0.5,
     0.8,
+    0.0,
     0.0
   },
   {
@@ -119,6 +128,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "R",
     -0.6,
     0.3,
+    0.0,
     0.0
   },
   {
@@ -128,6 +138,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "R",
     -0.6,
     0.3,
+    0.0,
     0.0
   },
   {
@@ -137,6 +148,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "B",
     0.0,
     0.9,
+    0.0,
     0.0
   },
   {
@@ -146,6 +158,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "C",
     0.0,
     0.9,
+    0.0,
     0.0
   },
   {
@@ -155,6 +168,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "R",
     -0.3,
     0.5,
+    0.0,
     0.0
   },
   {
@@ -164,6 +178,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "H",
     0.4,
     0.6,
+    0.0,
     0.0
   },
    {
@@ -173,6 +188,7 @@ drum_config_t drum_config[NUM_DRUMCONFIG] = {
     "-",
     0.0,
     0.0,
+    0.0,
     0.0
   }
 };