SGTL5000 peak-peak voltage raised.

Fixed displaying right value for OP enable/disable.

UI.hpp

@@ -2874,9 +2874,15 @@ void UI_handle_OP(uint8_t param, uint8_t op, uint8_t instance_id)
       LCDML.FUNC_goBackToMenu();
     }
     else if (LCDML.BT_checkUp() && state == true)
+    {
       bitClear(configuration.dexed[instance_id].op_enabled, op);
+      state = false;
+    }
     else if (LCDML.BT_checkDown() && state == false)
+    {
       bitSet(configuration.dexed[instance_id].op_enabled, op);
+      state = true;
+    }
   }
 
   lcd.setCursor(0, 1);

config.h

@@ -99,7 +99,28 @@
 #define REDUCE_LOUDNESS 0
 //#define REDUCE_LOUDNESS_FACTOR 1.0
 #else // IF TEENSY_AUDIO_BOARD
-#define SGTL5000_LINEOUT_LEVEL 29
+/*
+  13: 3.16 Volts p-p
+  14: 2.98 Volts p-p
+  15: 2.83 Volts p-p
+  16: 2.67 Volts p-p
+  17: 2.53 Volts p-p
+  18: 2.39 Volts p-p
+  19: 2.26 Volts p-p
+  20: 2.14 Volts p-p
+  21: 2.02 Volts p-p
+  22: 1.91 Volts p-p
+  23: 1.80 Volts p-p
+  24: 1.71 Volts p-p
+  25: 1.62 Volts p-p
+  26: 1.53 Volts p-p
+  27: 1.44 Volts p-p
+  28: 1.37 Volts p-p
+  29: 1.29 Volts p-p  (default)
+  30: 1.22 Volts p-p
+  31: 1.16 Volts p-p
+*/
+#define SGTL5000_LINEOUT_LEVEL 21
 #if AUDIO_BLOCK_SAMPLES == 64
 #define AUDIO_MEM 512
 #else