diff --git a/src/examples/media-session/policy-node.c b/src/examples/media-session/policy-node.c
index 72fd8a3a1..1ef56b70d 100644
--- a/src/examples/media-session/policy-node.c
+++ b/src/examples/media-session/policy-node.c
@@ -287,7 +287,7 @@ handle_node(struct impl *impl, struct sm_object *object)
 		else
 			return 0;
 
-		if (strcmp(media_class, "Sink") == 0)
+		if (strcmp(media_class, "Sink") == 0 || strcmp(media_class, "Duplex") == 0)
 			direction = PW_DIRECTION_INPUT;
 		else if (strcmp(media_class, "Source") == 0)
 			direction = PW_DIRECTION_OUTPUT;
diff --git a/src/modules/module-adapter/adapter.c b/src/modules/module-adapter/adapter.c
index 73dc421e0..fc6c3292d 100644
--- a/src/modules/module-adapter/adapter.c
+++ b/src/modules/module-adapter/adapter.c
@@ -89,7 +89,7 @@ static void node_port_init(void *data, struct pw_impl_port *port)
 	struct pw_properties *new;
 	const char *str, *path, *node_name, *media_class;
 	char position[8], *prefix;
-	bool is_monitor, is_device;
+	bool is_monitor, is_device, is_duplex;
 
 	direction = pw_impl_port_get_direction(port);
 
@@ -111,9 +111,11 @@ static void node_port_init(void *data, struct pw_impl_port *port)
 	else
 		is_device = false;
 
+	is_duplex = media_class != NULL &&strstr(media_class, "Duplex") != NULL;
+
 	new = pw_properties_new(NULL, NULL);
 
-	if (is_monitor)
+	if (is_monitor && !is_duplex)
 		prefix = "monitor";
 	else if (is_device)
 		prefix = direction == PW_DIRECTION_INPUT ?
diff --git a/src/modules/module-protocol-pulse/collect.c b/src/modules/module-protocol-pulse/collect.c
index 39901d5d6..4d8d0f210 100644
--- a/src/modules/module-protocol-pulse/collect.c
+++ b/src/modules/module-protocol-pulse/collect.c
@@ -49,7 +49,7 @@ static bool object_is_sink(struct pw_manager_object *o)
 	    strcmp(o->type, PW_TYPE_INTERFACE_Node) == 0 &&
 	    o->props != NULL &&
 	    (str = pw_properties_get(o->props, PW_KEY_MEDIA_CLASS)) != NULL &&
-	    (strcmp(str, "Audio/Sink") == 0 || strcmp(str, "Audio/Sink/Virtual") == 0);
+	    (strcmp(str, "Audio/Sink") == 0 || strcmp(str, "Audio/Duplex") == 0);
 }
 
 static bool object_is_source(struct pw_manager_object *o)
@@ -59,12 +59,21 @@ static bool object_is_source(struct pw_manager_object *o)
 	    strcmp(o->type, PW_TYPE_INTERFACE_Node) == 0 &&
 	    o->props != NULL &&
 	    (str = pw_properties_get(o->props, PW_KEY_MEDIA_CLASS)) != NULL &&
-	    strcmp(str, "Audio/Source") == 0;
+	    (strcmp(str, "Audio/Source") == 0 || strcmp(str, "Audio/Duplex") == 0);
+}
+
+static bool object_is_monitor(struct pw_manager_object *o)
+{
+	const char *str;
+	return strcmp(o->type, PW_TYPE_INTERFACE_Node) == 0 &&
+		o->props != NULL &&
+		(str = pw_properties_get(o->props, PW_KEY_MEDIA_CLASS)) != NULL &&
+		(strcmp(str, "Audio/Sink") == 0);
 }
 
 static bool object_is_source_or_monitor(struct pw_manager_object *o)
 {
-	return object_is_source(o) || object_is_sink(o);
+	return object_is_source(o) || object_is_monitor(o);
 }
 
 static bool object_is_sink_input(struct pw_manager_object *o)
diff --git a/src/modules/module-protocol-pulse/pulse-server.c b/src/modules/module-protocol-pulse/pulse-server.c
index 78eb80f47..b6113f604 100644
--- a/src/modules/module-protocol-pulse/pulse-server.c
+++ b/src/modules/module-protocol-pulse/pulse-server.c
@@ -3523,7 +3523,7 @@ static int fill_source_info(struct client *client, struct message *m,
 	struct card_info card_info = CARD_INFO_INIT;
 	struct device_info dev_info = DEVICE_INFO_INIT(PW_DIRECTION_INPUT);
 
-	is_monitor = object_is_sink(o);
+	is_monitor = object_is_monitor(o);
 	if ((!object_is_source(o) && !is_monitor) || info == NULL || info->props == NULL)
 		return -ENOENT;