diff --git a/@sampler/src/main.cpp b/@sampler/src/main.cpp
index 63bfbad..cda8bd5 100644
--- a/@sampler/src/main.cpp
+++ b/@sampler/src/main.cpp
@@ -349,8 +349,10 @@ void setup() {
   mixer2.gain(1,1.0);
   mixer2.gain(2,0);
   mixer2.gain(3,0);
-  amp1.gain(GAIN_FACTOR);
-  amp2.gain(GAIN_FACTOR);
+  // amp1.gain(GAIN_FACTOR);
+  // amp2.gain(GAIN_FACTOR);
+  amp1.gain(33.0/127.0); //default volume preset
+  amp2.gain(33.0/127.0); //default volume preset
 
   //let auto-poweroff speakers stay turned ON!
   sine1.frequency(IDLE_FREQ);
diff --git a/audioooo/src/main.cpp b/audioooo/src/main.cpp
index f576040..242c0d3 100644
--- a/audioooo/src/main.cpp
+++ b/audioooo/src/main.cpp
@@ -16,7 +16,7 @@
 //============<identities>============
 //
 #define MY_GROUP_ID         (10000)
-#define MY_ID               (MY_GROUP_ID + 15)
+#define MY_ID               (MY_GROUP_ID + 7)
 #define MY_SIGN             ("AUDIOOOO")
 #define ADDRESSBOOK_TITLE   ("broadcast only")
 //
@@ -495,7 +495,9 @@ void setup() {
 
   //audio(I2S)
   audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT);
-  audio.setVolume(21);   // 0...21
+  // audio.setVolume(21);   // 0...21
+  audio.setVolume(11.57);   // 70 * 21 / 127 == 11.57
+
   // audio.connecttoFS(SD, filename.c_str());
 
   //info
diff --git a/q/src/main.cpp b/q/src/main.cpp
index 352439d..3a430f4 100644
--- a/q/src/main.cpp
+++ b/q/src/main.cpp
@@ -670,7 +670,8 @@ void setup() {
 
   //audio(I2S)
   audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT);
-  audio.setVolume(21);   // 0...21
+  // audio.setVolume(21);   // 0...21
+  audio.setVolume(14.88);   // 90 * 21 / 127 == 14.88
   // audio.connecttoFS(SD, filename.c_str());
 
   //info