diff --git a/asound_4mic.conf b/asound_4mic.conf
index 706dbe5..655721a 100644
--- a/asound_4mic.conf
+++ b/asound_4mic.conf
@@ -21,6 +21,7 @@ pcm.dmixed {
 
 
 pcm.ac108 {
-    type plug
+    type dsnoop
     ac108-slavepcm "hw:1,0"
+    ipc_key 1234
 }