diff --git a/spa/include/spa/utils/keys.h b/spa/include/spa/utils/keys.h
index 1147ebb1f..4114b4656 100644
--- a/spa/include/spa/utils/keys.h
+++ b/spa/include/spa/utils/keys.h
@@ -59,6 +59,7 @@ extern "C" {
 #define SPA_KEY_API_ALSA_PCM_SUBNAME	"api.alsa.pcm.subname"		/**< subdevice_name from pcm_info */
 #define SPA_KEY_API_ALSA_PCM_CLASS	"api.alsa.pcm.class"		/**< class from pcm_info as string */
 #define SPA_KEY_API_ALSA_PCM_SUBCLASS	"api.alsa.pcm.subclass"		/**< subclass from pcm_info as string */
+#define SPA_KEY_API_ALSA_PCM_SYNC_ID	"api.alsa.pcm.sync-id"		/**< sync id */
 
 /** keys for v4l2 api */
 #define SPA_KEY_API_V4L2		"api.v4l2"			/**< key for the v4l2 api */
diff --git a/spa/plugins/alsa/alsa-device.c b/spa/plugins/alsa/alsa-device.c
index 3e285fe53..c08cb592b 100644
--- a/spa/plugins/alsa/alsa-device.c
+++ b/spa/plugins/alsa/alsa-device.c
@@ -103,9 +103,11 @@ static const char *get_subclass(snd_pcm_info_t *pcminfo)
 
 static int emit_node(struct impl *this, snd_pcm_info_t *pcminfo, uint32_t id)
 {
-	struct spa_dict_item items[6];
+	struct spa_dict_item items[7];
 	char device_name[128];
+	char sync_name[128];
 	struct spa_device_object_info info;
+	snd_pcm_sync_id_t sync_id;
 
 	info = SPA_DEVICE_OBJECT_INFO_INIT();
 	info.type = SPA_TYPE_INTERFACE_Node;
@@ -122,6 +124,10 @@ static int emit_node(struct impl *this, snd_pcm_info_t *pcminfo, uint32_t id)
 	items[3] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_SUBNAME,    snd_pcm_info_get_subdevice_name(pcminfo));
 	items[4] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_CLASS,      get_class(pcminfo));
 	items[5] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_SUBCLASS,   get_subclass(pcminfo));
+	sync_id = snd_pcm_info_get_sync(pcminfo);
+	snprintf(sync_name, 128, "%08x:%08x:%08x:%08x",
+			sync_id.id32[0], sync_id.id32[1], sync_id.id32[2], sync_id.id32[3]);
+	items[6] = SPA_DICT_ITEM_INIT(SPA_KEY_API_ALSA_PCM_SYNC_ID,    sync_name);
 	info.props = &SPA_DICT_INIT_ARRAY(items);
 
 	spa_device_emit_object_info(&this->hooks, id, &info);