diff --git a/UI.cpp b/UI.cpp
index a1bfd2d..b5a10d0 100644
--- a/UI.cpp
+++ b/UI.cpp
@@ -292,57 +292,60 @@ void handle_ui(void)
               switch (ui_main_state)
               {
                 case UI_MAIN_FILTER_FRQ:
-/*                  if (enc[i].read() <= 0)
+                  if (enc[i].read() <= 0)
                     enc[i].write(0);
                   else if (enc[i].read() > ENC_FILTER_FRQ_STEPS)
                     enc[i].write(ENC_FILTER_FRQ_STEPS);
                   effect_filter_frq = enc[i].read();
-                  if (effect_filter_frq == ENC_FILTER_FRQ_STEPS)
-                  {
+                  /*
+                    if (effect_filter_frq == ENC_FILTER_FRQ_STEPS)
+                    {
                     // turn "off" filter
                     mixer1.gain(0, 0.0); // filtered signal off
                     mixer1.gain(3, 1.0); // original signal on
-                  }
-                  else
-                  {
+                    }
+                    else
+                    {
                     // turn "on" filter
                     mixer1.gain(0, 1.0); // filtered signal on
                     mixer1.gain(3, 0.0); // original signal off
-                  }
-                  filter1.frequency(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0);
-#ifdef DEBUG
-                  Serial.print(F("Setting filter frequency to: "));
-                  Serial.println(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0, DEC);
-#endif
-*/
+                    }
+                    filter1.frequency(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0);
+                    #ifdef DEBUG
+                    Serial.print(F("Setting filter frequency to: "));
+                    Serial.println(EXP_FUNC((float)map(effect_filter_frq, 0, ENC_FILTER_FRQ_STEPS, 0, 1024) / 150.0) * 10.0 + 80.0, DEC);
+                    #endif
+                  */
                   break;
                 case UI_MAIN_FILTER_RES:
-/*                  if (enc[i].read() <= 0)
+                  if (enc[i].read() <= 0)
                     enc[i].write(0);
                   else if (enc[i].read() > ENC_FILTER_RES_STEPS)
                     enc[i].write(ENC_FILTER_RES_STEPS);
                   effect_filter_resonance = enc[i].read();
-                  //filter1.resonance(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0));
-                  filter1.resonance(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61);
-
-#ifdef DEBUG
-                  Serial.print(F("Setting filter resonance to: "));
-                  Serial.println(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61, 2);
-#endif
-*/
+                  /*
+                    //filter1.resonance(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0));
+                    filter1.resonance(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61);
+
+                    #ifdef DEBUG
+                    Serial.print(F("Setting filter resonance to: "));
+                    Serial.println(EXP_FUNC(mapfloat(effect_filter_resonance, 0, ENC_FILTER_RES_STEPS, 0.7, 5.0)) * 0.044 + 0.61, 2);
+                    #endif
+                  */
                   break;
                 case UI_MAIN_FILTER_OCT:
-/*                  if (enc[i].read() <= 0)
+                  if (enc[i].read() <= 0)
                     enc[i].write(0);
                   else if (enc[i].read() > ENC_FILTER_OCT_STEPS)
                     enc[i].write(ENC_FILTER_OCT_STEPS);
                   effect_filter_octave = enc[i].read();
-                  filter1.octaveControl(mapfloat(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0.0, 7.0));
-#ifdef DEBUG
-                  Serial.print(F("Setting filter octave control to: "));
-                  Serial.println(mapfloat(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0.0, 7.0), 2);
-#endif
-*/
+                  /*
+                    filter1.octaveControl(mapfloat(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0.0, 7.0));
+                    #ifdef DEBUG
+                    Serial.print(F("Setting filter octave control to: "));
+                    Serial.println(mapfloat(effect_filter_octave, 0, ENC_FILTER_OCT_STEPS, 0.0, 7.0), 2);
+                    #endif
+                  */
                   break;
               }
               ui_show_effects_filter();
diff --git a/dexed.cpp b/dexed.cpp
index 7634fce..16a830d 100644
--- a/dexed.cpp
+++ b/dexed.cpp
@@ -152,7 +152,7 @@ void Dexed::getSamples(uint16_t n_samples, int16_t* buffer)
           int32_t clip_val = val < -(1 << 24) ? 0x8000 : val >= (1 << 24) ? 0x7fff : val >> 9;
 #endif
 
-          float f = static_cast<float>(clip_val >> REDUCE_LOUDNESS) / 0x8000;
+          float f = static_cast<float>(clip_val >> REDUCE_LOUDNESS) / 0x7fff;
           if (f > 1.0)
           {
             f = 1.0;
@@ -173,7 +173,7 @@ void Dexed::getSamples(uint16_t n_samples, int16_t* buffer)
   fx.process(sumbuf, n_samples);
 
   for (i = 0; i < n_samples; ++i)
-    buffer[i] = static_cast<int16_t>(sumbuf[i] * 0x8000);
+    buffer[i] = static_cast<int16_t>(sumbuf[i] * 0x7fff);
 }
 
 void Dexed::keydown(uint8_t pitch, uint8_t velo) {