Thanks, I have downloaded and will test. The biggest problem I have with my WH-1000XM5’s on the NW-A306 is listening to a stream on say Apple Music with the Bluetooth set to high quality. That though is a minor gripe and not a deal beaker.

This is how it looks when I attach my USB C dac

I bought mine from the EBay seller Neetex and they have ‘Genuine Japanese Model’ in the products title

Thanks I followed the guide and it fixed the problems with the drop outs with Bluetooth set to best quality.