diff --git a/src/conf/cards/HDA-Intel.conf b/src/conf/cards/HDA-Intel.conf
index 800281ed..d3ac0021 100644
--- a/src/conf/cards/HDA-Intel.conf
+++ b/src/conf/cards/HDA-Intel.conf
@@ -57,6 +57,8 @@ HDA-Intel.pcm.default {
 			max_dB 30.0
 			resolution 121
 		}
+		# to avoid possible phase inversions with digital mics
+		route_policy copy
 	}
 	hint.device 0
 }