diff --git a/bluetooth/bt_vendor_overlay.conf b/bluetooth/bt_vendor_overlay.conf
index d565ec0..e593d7e 100644
--- a/bluetooth/bt_vendor_overlay.conf
+++ b/bluetooth/bt_vendor_overlay.conf
@@ -40,3 +40,9 @@ BtHalBqrEnable = false
 HwStageWithOldChipFwNoLongerSupport = EVT1.0-PROTO1.0-PROTO1.1
 
 ThreadDispatcherEnabled = true
+
+# A2DP_LDAC_QUALITY_HIGH 0  // Equal to 990/909(kbps)
+# A2DP_LDAC_QUALITY_MID 1   // Equal to 660/606(kbps)
+# A2DP_LDAC_QUALITY_LOW 2   // Equal to 330/303(kbps)
+# A2DP_LDAC_QUALITY_ABR 3   // ABR mode, range: 990,660,492,396,330(kbps)
+LdacDefaultQualityMode = 1