05-14-2021, 10:28 PM
(05-14-2021, 08:34 PM)Tim Curtis Wrote: If the volume controller in ESS chip is not being used it a vendor implementation issue. I thought Khadas released a f/w update that enabled the ESS controller to be used??
I just discovered I was incorrect in my previous post. I've gone back and edited it. In fact, software volume control of DSD playback with the KTB works as you describe for the Allo Rev. I don't know why I thought otherwise?!?
Hardware volume control of DSD streams, however, works as I described and contrary to what you describe for the Allo Rev. IIRC I updated the Khadas to firmware v2.00. This appears to be the latest but I'll check it later if I can find the time.
Hardware volume control of PCM streams worked already with firmware v1.04.
Maybe I'm missing something in the scattered documentation (or worse, their forum). I can't imagine I've borked the configuration but anything is possible.
Do any other USB DACs incorporate the ESS9038Q2M? Do they properly support hardware volume control for DSD?
Regards,
Kent
