diff --git a/src/conf/cards/Audigy.conf b/src/conf/cards/Audigy.conf
index aee0c1a6..8d79fe73 100644
--- a/src/conf/cards/Audigy.conf
+++ b/src/conf/cards/Audigy.conf
@@ -19,15 +19,37 @@ Audigy.pcm.front.0 {
 		type ctl_elems
 		hook_args [
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
 			}
-						{
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0 ]
 			}
 
@@ -53,9 +75,20 @@ Audigy.pcm.rear.0 {
 		type ctl_elems
 		hook_args [
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 0 0 255 255 0 0 0 0  0 0 255 0 0 0 0 0  0 0 0 255 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 0 0 255 255 0 0 0 0  0 0 255 0 0 0 0 0  0 0 0 255 0 0 0 0 ]
 			}
 		]
@@ -79,15 +112,37 @@ Audigy.pcm.center_lfe.0 {
 		type ctl_elems
 		hook_args [
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
 			}
 			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0 ]
 			}
 		]
@@ -221,15 +276,37 @@ Audigy.pcm.iec958.0 {
 				value [ 1 1 ]
 			}
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
 			}
 			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 20 21 0 0 0 0 0 0  20 21 0 0 0 0 0 0   20 21 0 0 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 20 21 0 0 0 0 0 0  20 21 0 0 0 0 0 0   20 21 0 0 0 0 0 0 ]
 			}
 			{
diff --git a/src/conf/cards/Audigy2.conf b/src/conf/cards/Audigy2.conf
index a569d1d9..1f872674 100644
--- a/src/conf/cards/Audigy2.conf
+++ b/src/conf/cards/Audigy2.conf
@@ -19,15 +19,37 @@ Audigy2.pcm.front.0 {
 		type ctl_elems
 		hook_args [
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
 			}
-						{
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0  8 9 0 0 0 0 0 0 ]
 			}
 
@@ -53,9 +75,20 @@ Audigy2.pcm.rear.0 {
 		type ctl_elems
 		hook_args [
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 0 0 255 255 0 0 0 0  0 0 255 0 0 0 0 0  0 0 0 255 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 0 0 255 255 0 0 0 0  0 0 255 0 0 0 0 0  0 0 0 255 0 0 0 0 ]
 			}
 		]
@@ -79,15 +112,37 @@ Audigy2.pcm.center_lfe.0 {
 		type ctl_elems
 		hook_args [
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
 			}
 			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0  6 7 0 0 0 0 0 0 ]
 			}
 		]
@@ -111,15 +166,37 @@ Audigy2.pcm.side.0 {
 		type ctl_elems
 		hook_args [
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
 			}
 			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 14 15 0 0 0 0 0 0  14 15 0 0 0 0 0 0  14 15 0 0 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 14 15 0 0 0 0 0 0  14 15 0 0 0 0 0 0  14 15 0 0 0 0 0 0 ]
 			}
 		]
@@ -310,15 +387,37 @@ Audigy2.pcm.iec958.0 {
 				value [ 1 1 ]
 			}
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
 			}
 			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 0 0 0 0  255 0 0 0 0 0 0 0  0 255 0 0 0 0 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 20 21 0 0 0 0 0 0  20 21 0 0 0 0 0 0   20 21 0 0 0 0 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 20 21 0 0 0 0 0 0  20 21 0 0 0 0 0 0   20 21 0 0 0 0 0 0 ]
 			}
 			{
diff --git a/src/conf/cards/EMU10K1.conf b/src/conf/cards/EMU10K1.conf
index 8dd9e177..8338009a 100644
--- a/src/conf/cards/EMU10K1.conf
+++ b/src/conf/cards/EMU10K1.conf
@@ -38,9 +38,20 @@ EMU10K1.pcm.rear.0 {
 				value [ 0 0 ]
 			}
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 0 0 255 255 0 0 255 0 0 0 0 255 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 0 0 255 255 0 0 255 0 0 0 0 255 ]
 			}
 		]
@@ -100,15 +111,37 @@ EMU10K1.pcm.center_lfe.0 {
 #				value 0
 #			}
 			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Volume"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
 				value [ 255 255 0 0 255 0 0 0 0 255 0 0 ]
 			}
 			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Volume"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
+				value [ 255 255 0 0 255 0 0 0 0 255 0 0 ]
+			}
+			{
+				interface PCM
+				device 0
 				name "EMU10K1 PCM Send Routing"
 				index { @func private_pcm_subdevice }
 				lock true
+				optional true
+				value [ 6 7 0 0 6 7 0 0 6 7 0 0 ]
+			}
+			{
+				# for compatibility with older drivers
+				name "EMU10K1 PCM Send Routing"
+				index { @func private_pcm_subdevice }
+				lock true
+				optional true
 				value [ 6 7 0 0 6 7 0 0 6 7 0 0 ]
 			}
 		]