diff --git a/soundcube-i2s-test/soundcube-i2s-test.ino b/soundcube-i2s-test/soundcube-i2s-test.ino
index d22a75c..0baee99 100644
--- a/soundcube-i2s-test/soundcube-i2s-test.ino
+++ b/soundcube-i2s-test/soundcube-i2s-test.ino
@@ -90,7 +90,7 @@ void setup() {
   // GENERAL
   cw(0x00, 0x00); // select page 0
   cw(0x01, 0x01); // soft reset
-  cw(0x1b, 0x30); // select I2S with 32 bit word length
+  cw(0x1b, 0b00000000); // select I2S with 16 bit word length
   cw(0x1d, 0b00000000); // disable loopback
 
   // POWER and CM
@@ -98,21 +98,21 @@ void setup() {
   cw(0x01, 0x08); // disable weak (crude) AVdd connection to DVdd
   cw(0x02, 0x01); // enable internal AVdd LDO and enable analog blocks
   cw(0x09, 0b00001100); // power up LOL, LOR, power down MAL, MAR, HPL, HPR
-  cw(0x0a, 0b00000000); // set full chip CM to 0.9V
+  cw(0x0a, 0b01000000); // set full chip CM to 0.75V
   cw(0x47, 0b00110010); // analog input quick charge time 6.4ms
 
   // ROUTING
   cw(0x00, 0x01); // select page 1
-  cw(0x34, 0b11000000); // route IN1L to LEFT_P with 20k input impedance
-  cw(0x36, 0b11000000); // route CM to LEFT_M with 20k input impedance
-  cw(0x37, 0b11000000); // route IN1R to RIGHT_P with 20k input impedance
-  cw(0x39, 0b11000000); // route CM to RIGHT_M with 20k input impedance
+  cw(0x34, 0b11000000); // LEFT MICPGA P route IN1L to LEFT_P with 40k input impedance
+  cw(0x36, 0b11000000); // LEFT MICPGA M route CM to LEFT_M with 20k input impedance
+  cw(0x37, 0b11000000); // RIGHT MICPGA P route IN1R to RIGHT_P with 20k input impedance
+  cw(0x39, 0b11000000); // RIGHT MICPGA M route CM to RIGHT_M with 20k input impedance
   cw(0x3a, 0b00111100); // connect IN2, IN3 weakly to CM
 
   // GAIN
   cw(0x00, 0x01); // select page 1
-  cw(0x3b, 0b00000000); // unmute left MICPGA, set gain to > 0db
-  cw(0x3c, 0b00000000); // unmute right MICPGA, set gain to > 0db
+  cw(0x3b, 0b00000000); // unmute left MICPGA, set gain to 0db
+  cw(0x3c, 0b00000000); // unmute right MICPGA, set gain to 0db
 
   // VOLUME
   cw(0x00, 0x01); // select page 1
@@ -124,7 +124,7 @@ void setup() {
   cw(0x12, 0x81); // NADC 1
   cw(0x13, 0x82); // MADC 2
   cw(0x14, 0x80); // OSR ADC 128
-  cw(0x3d, 0x01); // ADC PRB_R1
+  cw(0x3d, 0b00000001); // ADC PRB_R3 = 11, PRB_R2 = 10, PRB_R1 = 01
 
   cw(0x00, 0x01); // select page 1
   cw(0x3d, 0b01100100); // ADC PTM_R3
@@ -165,13 +165,13 @@ void setup() {
 
   // DAC VOLUME 0b00000000 = 0dB, 10000001 = -63.5dB, 0b00110000 = +24dB
   cw(0x00, 0x00); // select page 0
-  cw(0x41, 0b00000000); // LEFT 
-  cw(0x42, 0b00000000); // RIGHT
+  cw(0x41, 0b11111001); // LEFT 
+  cw(0x42, 0b11111001); // RIGHT
   
   // ADC VOLUME 0b1101000 = -12dB, 0b00000000 = 0dB, 0b0101000 = +20dB
   cw(0x00, 0x00); // select page 0
-  cw(0x53, 0b00000000); // LEFT
-  cw(0x54, 0b00000000); // RIGHT
+  cw(0x53, 0b01110000); // LEFT
+  cw(0x54, 0b01110000); // RIGHT
 
   // STATUS FLAGS
   Serial.println("CODEC STATUS");
@@ -213,7 +213,7 @@ void loop() {
   // l = (int16_t)(sin(sine_pos) * 8192.0f);
   // r = l;
 
-  i2s.write16(l, r);
+  i2s.write16(l*-1, r*-1);
 
   // volume += l + r;
   // if(millis() - last > 1000){