diff --git a/MicroDexed.ino b/MicroDexed.ino
index 86c4d1e..a4ab68a 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -373,7 +373,9 @@ extern char seq_chord_names[7][4];
  ***********************************************************************/
 void setup()
 {
+#ifdef DEBUG
   Serial.begin(SERIAL_SPEED);
+#endif
 
 #ifdef DISPLAY_LCD_SPI
   pinMode(SDCARD_CS_PIN, OUTPUT);
diff --git a/UI.hpp b/UI.hpp
index 8824ec7..1a40a90 100644
--- a/UI.hpp
+++ b/UI.hpp
@@ -7698,7 +7698,7 @@ void UI_func_eq_1(uint8_t param)
   {
     encoderDir[ENC_R].reset();
     lcd.setCursor(0, 0);
-    lcd.print(F("EQ 50Hz"));
+    lcd.print(F("EQ Low-Cut"));
     lcd.setCursor(0, 1);
     lcd.print(F("Not implemented."));
   }
@@ -7722,12 +7722,11 @@ void UI_func_eq_1(uint8_t param)
         configuration.fx.eq_1 = constrain(configuration.fx.eq_1 - ENCODER[ENC_R].speed(), EQ_1_MIN, EQ_1_MAX);
       }
     }
-    lcd_display_meter_float("EQ 50Hz", configuration.fx.eq_1, 0.1, 0.0, EQ_1_MIN, EQ_1_MAX, 1, 1, false, true, true);
-    sgtl5000.setEQGain(1, mapfloat(configuration.fx.eq_1, EQ_1_MIN, EQ_1_MAX, -9.9, 9.9));
+    lcd_display_meter_int("EQ Low-Cut [Hz]", configuration.fx.eq_1, 1.0, 0.0, EQ_1_MIN, EQ_1_MAX, 3, false, false, true);
+    sgtl5000.setEQFc(1, mapfloat(configuration.fx.eq_1, EQ_1_MIN, EQ_1_MAX, 15, 250));
+    sgtl5000.setEQGain(1, 6.0);
     sgtl5000.commitFilter(1);
 #ifdef DEBUG
-    Serial.print("!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-    Serial.println(mapfloat(configuration.fx.eq_1, EQ_1_MIN, EQ_1_MAX, -9.9, 9.9), 3);
     sgtl5000.show_params(1);
 #endif
   }
@@ -7988,7 +7987,7 @@ void UI_func_eq_7(uint8_t param)
   {
     encoderDir[ENC_R].reset();
     lcd.setCursor(0, 0);
-    lcd.print(F("EQ 10000Hz"));
+    lcd.print(F("EQ High-Cut"));
     lcd.setCursor(0, 1);
     lcd.print(F("Not implemented."));
   }
@@ -8012,8 +8011,8 @@ void UI_func_eq_7(uint8_t param)
         configuration.fx.eq_7 = constrain(configuration.fx.eq_7 - ENCODER[ENC_R].speed(), EQ_7_MIN, EQ_7_MAX);
       }
     }
-    lcd_display_meter_float("EQ 10000Hz", configuration.fx.eq_7, 0.1, 0.0, EQ_7_MIN, EQ_7_MAX, 1, 1, false, true, true);
-    sgtl5000.setEQGain(7, mapfloat(configuration.fx.eq_7, EQ_7_MIN, EQ_7_MAX, 0.0, 1.0));
+    lcd_display_meter_float("EQ High-Cut[kHz]", configuration.fx.eq_7, 1.0, 0.0, EQ_7_MIN, EQ_7_MAX, 3, 1, false, false, true);
+    sgtl5000.setEQFc(7, mapfloat(configuration.fx.eq_7, EQ_7_MIN, EQ_7_MAX, EQ_7_MIN * 1000.0, EQ_7_MAX * 1000.0));
     sgtl5000.commitFilter(7);
 #ifdef DEBUG
     sgtl5000.show_params(7);
diff --git a/UI_FX.h b/UI_FX.h
index e2e5383..51751c8 100644
--- a/UI_FX.h
+++ b/UI_FX.h
@@ -53,14 +53,14 @@ LCDML_add(19, LCDML_0_1_2_3_4, 1, "Roomsize", UI_func_reverb_roomsize);
 LCDML_add(20, LCDML_0_1_2_3_4, 2, "Damping", UI_func_reverb_damping);
 LCDML_add(21, LCDML_0_1_2_3_4, 3, "Level", UI_func_reverb_level);
 LCDML_add(22, LCDML_0_1_2_3_4, 4, "Reverb Send", UI_func_reverb_send);
-LCDML_add(23, LCDML_0_1_2_3, 5, "EQ", NULL);
-LCDML_add(24, LCDML_0_1_2_3_5, 1, "50Hz", UI_func_eq_1);
-LCDML_add(25, LCDML_0_1_2_3_5, 2, "120Hz", UI_func_eq_2);
-LCDML_add(26, LCDML_0_1_2_3_5, 3, "220Hz", UI_func_eq_3);
-LCDML_add(27, LCDML_0_1_2_3_5, 4, "1000Hz", UI_func_eq_4);
-LCDML_add(28, LCDML_0_1_2_3_5, 5, "2000Hz", UI_func_eq_5);
-LCDML_add(29, LCDML_0_1_2_3_5, 6, "7000Hz", UI_func_eq_6);
-LCDML_add(30, LCDML_0_1_2_3_5, 7, "10000Hz", UI_func_eq_7);
+LCDML_add(23, LCDML_0_1_2, 4, "EQ", NULL);
+LCDML_add(24, LCDML_0_1_2_4, 1, "Low-Cut", UI_func_eq_1);
+LCDML_add(25, LCDML_0_1_2_4, 2, "120Hz", UI_func_eq_2);
+LCDML_add(26, LCDML_0_1_2_4, 3, "220Hz", UI_func_eq_3);
+LCDML_add(27, LCDML_0_1_2_4, 4, "1000Hz", UI_func_eq_4);
+LCDML_add(28, LCDML_0_1_2_4, 5, "2000Hz", UI_func_eq_5);
+LCDML_add(29, LCDML_0_1_2_4, 6, "7000Hz", UI_func_eq_6);
+LCDML_add(30, LCDML_0_1_2_4, 7, "High-Cut", UI_func_eq_7);
 LCDML_add(31, LCDML_0_1, 3, "Controller", NULL);
 LCDML_add(32, LCDML_0_1_3, 1, "Pitchbend", NULL);
 LCDML_add(33, LCDML_0_1_3_1, 1, "PB Range", UI_func_pb_range);
diff --git a/UI_FX_T4.h b/UI_FX_T4.h
index 7c407b3..509a9ae 100644
--- a/UI_FX_T4.h
+++ b/UI_FX_T4.h
@@ -56,14 +56,14 @@ LCDML_add(22, LCDML_0_1_2_3_4, 4, "Hidamp", UI_func_reverb_hidamp);
 LCDML_add(23, LCDML_0_1_2_3_4, 5, "Diffusion", UI_func_reverb_diffusion);
 LCDML_add(24, LCDML_0_1_2_3_4, 6, "Level", UI_func_reverb_level);
 LCDML_add(25, LCDML_0_1_2_3_4, 7, "Reverb Send", UI_func_reverb_send);
-LCDML_add(26, LCDML_0_1_2_3, 5, "EQ", NULL);
-LCDML_add(27, LCDML_0_1_2_3_5, 1, "50Hz", UI_func_eq_1);
-LCDML_add(28, LCDML_0_1_2_3_5, 2, "110Hz", UI_func_eq_2);
-LCDML_add(29, LCDML_0_1_2_3_5, 3, "220Hz", UI_func_eq_3);
-LCDML_add(30, LCDML_0_1_2_3_5, 4, "1000Hz", UI_func_eq_4);
-LCDML_add(31, LCDML_0_1_2_3_5, 5, "2000Hz", UI_func_eq_5);
-LCDML_add(32, LCDML_0_1_2_3_5, 6, "7000Hz", UI_func_eq_6);
-LCDML_add(33, LCDML_0_1_2_3_5, 7, "10000Hz", UI_func_eq_7);
+LCDML_add(26, LCDML_0_1_2, 4, "EQ", NULL);
+LCDML_add(27, LCDML_0_1_2_4, 1, "Low-Cut", UI_func_eq_1);
+LCDML_add(28, LCDML_0_1_2_4, 2, "110Hz", UI_func_eq_2);
+LCDML_add(29, LCDML_0_1_2_4, 3, "220Hz", UI_func_eq_3);
+LCDML_add(30, LCDML_0_1_2_4, 4, "1000Hz", UI_func_eq_4);
+LCDML_add(31, LCDML_0_1_2_4, 5, "2000Hz", UI_func_eq_5);
+LCDML_add(32, LCDML_0_1_2_4, 6, "7000Hz", UI_func_eq_6);
+LCDML_add(33, LCDML_0_1_2_4, 7, "High-Cut", UI_func_eq_7);
 LCDML_add(34, LCDML_0_1, 3, "Controller", NULL);
 LCDML_add(35, LCDML_0_1_3, 1, "Pitchbend", NULL);
 LCDML_add(36, LCDML_0_1_3_1, 1, "PB Range", UI_func_pb_range);
diff --git a/config.h b/config.h
index 408a4b8..1060f98 100644
--- a/config.h
+++ b/config.h
@@ -607,9 +607,9 @@
 #define VOICECONFIG_NUM_MAX MAX_VOICECONFIG
 #define VOICECONFIG_NUM_DEFAULT -1
 
-#define EQ_1_MIN -99
-#define EQ_1_MAX 99
-#define EQ_1_DEFAULT 0
+#define EQ_1_MIN 15
+#define EQ_1_MAX 250
+#define EQ_1_DEFAULT 50
 
 #define EQ_2_MIN -99
 #define EQ_2_MAX 99
@@ -631,9 +631,9 @@
 #define EQ_6_MAX 99
 #define EQ_6_DEFAULT 0
 
-#define EQ_7_MIN -99
-#define EQ_7_MAX 99
-#define EQ_7_DEFAULT 0
+#define EQ_7_MIN 8
+#define EQ_7_MAX 18
+#define EQ_7_DEFAULT 15
 
 // Buffer-size define for load/save configuration as JSON
 
@@ -691,13 +691,13 @@ typedef struct fx_s {
   uint8_t reverb_hidamp;
   uint8_t reverb_diffusion;
   uint8_t reverb_level;
-  int8_t eq_1;
+  uint8_t eq_1;
   int8_t eq_2;
   int8_t eq_3;
   int8_t eq_4;
   int8_t eq_5;
   int8_t eq_6;
-  int8_t eq_7;
+  uint8_t eq_7;
 } fx_t;
 
 typedef struct performance_s {
diff --git a/control_sgtl5000plus.h b/control_sgtl5000plus.h
index 7e0106a..7f600a7 100644
--- a/control_sgtl5000plus.h
+++ b/control_sgtl5000plus.h
@@ -29,7 +29,7 @@
 #include <Audio.h>
 
 #define EQ_TYPE_0 FILTER_HIPASS
-#define EQ_CENTER_FRQ_0 50.0
+#define EQ_CENTER_FRQ_0 15.0
 #define EQ_Q_0 0.666667
 
 #define EQ_TYPE_1 FILTER_LOSHELF
@@ -53,7 +53,7 @@
 #define EQ_Q_5 0.126984
 
 #define EQ_TYPE_6 FILTER_LOPASS
-#define EQ_CENTER_FRQ_6 10000.0
+#define EQ_CENTER_FRQ_6 18000.0
 #define EQ_Q_6 0.666667
 
 class AudioControlSGTL5000Plus : public AudioControlSGTL5000