diff --git a/config/open_source/target.mk b/config/open_source/target.mk
index 1de2561..eeadf46 100644
--- a/config/open_source/target.mk
+++ b/config/open_source/target.mk
@@ -58,11 +58,14 @@ export BT_DEBUG_TPORTS ?= 0
 TPORTS_KEY_COEXIST ?= 0
 
 export SNIFF_MODE_CHECK ?= 0
-
+# Merge L+R stream down to mono 
 AUDIO_OUTPUT_MONO ?= 0
 
 AUDIO_OUTPUT_DIFF ?= 0
 
+# Raise mic bias from 2.2V to 3.3V
+DIGMIC_HIGH_VOLT?=0 
+
 #### ANC DEFINE START ######
 export ANC_APP		    ?= 1
 # Feed Forward  ANC configuration (external mic)
@@ -72,13 +75,14 @@ export ANC_FB_ENABLED	?= 1
 # Wind noise reduction mode
 export ANC_WNR_ENABLED ?= 0
 
+# Music cancel mode. Conflicts with audio resampling
 export AUDIO_ANC_FB_MC ?= 0
 export AUDIO_SECTION_SUPPT ?= 0
 export AUD_SECTION_STRUCT_VERSION ?= 2
 # Music cancel hardware?
-export AUDIO_ANC_FB_MC_HW ?=1
+export AUDIO_ANC_FB_MC_HW ?=0
 export APP_ANC_KEY ?= 1
-# Feedback check for feedforward mic
+# Feedback check for feedforward mic. Locked on due to blobs
 export ANC_FB_CHECK ?= 1
 ##### ANC DEFINE END ######