diff --git a/src/daemon/filter-chain/spatializer-7.1.conf b/src/daemon/filter-chain/spatializer-7.1.conf
index 944ed6205..931e80975 100644
--- a/src/daemon/filter-chain/spatializer-7.1.conf
+++ b/src/daemon/filter-chain/spatializer-7.1.conf
@@ -118,8 +118,30 @@ context.modules = [
                         }
                     }
 
-                    { type = builtin label = mixer name = mixL }
-                    { type = builtin label = mixer name = mixR }
+                    { type = builtin label = mixer name = mixL
+                        control = {
+                            "Gain 1"    = 0.5
+                            "Gain 2"    = 0.5
+                            "Gain 3"    = 0.5
+                            "Gain 4"    = 0.5
+                            "Gain 5"    = 0.5
+                            "Gain 6"    = 0.5
+                            "Gain 7"    = 0.5
+                            "Gain 8"    = 0.5
+                        }
+		    }
+                    { type = builtin label = mixer name = mixR
+                        control = {
+                            "Gain 1"    = 0.5
+                            "Gain 2"    = 0.5
+                            "Gain 3"    = 0.5
+                            "Gain 4"    = 0.5
+                            "Gain 5"    = 0.5
+                            "Gain 6"    = 0.5
+                            "Gain 7"    = 0.5
+                            "Gain 8"    = 0.5
+                        }
+		    }
                 ]
                 links = [
                     # output