Index: firmware/drivers/audio/as3514.c
===================================================================
--- firmware/drivers/audio/as3514.c	(revision 28104)
+++ firmware/drivers/audio/as3514.c	(working copy)
@@ -432,19 +432,19 @@
         /* Combine MIC gains seamlessly with ADC levels */
         unsigned int mic1_r;
 
-        if (left >= 36) {
-            /* M1_Gain = +40db, ADR_Vol = +7.5dB .. +12.0 dB =>
-               +19.5 dB .. +24.0 dB */
+        if (left >= 28) {
+            /* M1_Gain = +40db, ADR_Vol = -4.5dB .. +12.0 dB =>
+               +7.5 dB .. +24.0 dB */
             left -= 8;
             mic1_r = MIC1_R_M1_GAIN_40DB;
-        } else if (left >= 32) {
-            /* M1_Gain = +34db, ADR_Vol = +7.5dB .. +12.0 dB =>
-               +13.5 dB .. +18.0 dB */
+        } else if (left >= 24) {
+            /* M1_Gain = +34db, ADR_Vol = -4.5dB .. -0 dB =>
+               +1.5 dB .. +6.0 dB */
             left -= 4; 
             mic1_r = MIC1_R_M1_GAIN_34DB;
         } else {
-            /* M1_Gain = +28db, ADR_Vol = -34.5dB .. +12.0 dB =>
-               -34.5 dB .. +12.0 dB */
+            /* M1_Gain = +28db, ADR_Vol = -34.5dB .. -0 dB =>
+               -34.5 dB .. -0 dB */
             mic1_r = MIC1_R_M1_GAIN_28DB;
         }