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Is Media center really passing audio as is?

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LawshrinkMD:
I have a similar question, on my Rasberry Pi 3B hooked up to a PS Audio Nuwave DSD over USB I get many choices, which seem to sound different.  There are lots listed, not all of them work.  Which should sound best?

default: CARD=P20 [ALSA] PS Audio USB Audio 2.0, USB Audio.  Default Audio Device

front:CARD=P20, DEV=0 [ALSA] PS Audio USB Audio 2.0, USB Audio. Front speakers

hw:CARD=P20, DEV=0 [ALSA] PS Audio USB Audio 2.0, USB Audio. Direct hardware device without any conversion

iec958: CARD=P20, DEV=0 [ALSA] PS Audio USB Audio 2.0, USB Audio. IEC958 (S/PDIF) Digital Audio Output

plughw:CARD=P20, DEV=0 [ALSA] PS Audio USB Audio 2.0, USB Audio. Hardware device with all software conversion

Thanks!

Awesome Donkey:
I'd choose hw:CARD=P20, DEV=0 [ALSA] PS Audio USB Audio 2.0, USB Audio if I were you. As you can see, it says Direct hardware device without any conversion next to it.

Hendrik:
The "front" device is usually what we recommend to use on a default ALSA setup. The "hw" device would likely also work just fine. Not quite sure if the front device goes through the ALSA mixer though.

bob:

--- Quote from: Hendrik on March 19, 2017, 04:13:55 am ---The "front" device is usually what we recommend to use on a default ALSA setup. The "hw" device would likely also work just fine. Not quite sure if the front device goes through the ALSA mixer though.

--- End quote ---
It's been my experience that the front: doesn't go through the ALSA mixer.
In the ALSA version that wheezy supported, the HW: device wasn't displayed as a choice, the ALSA in jessie now shows those as well.

Awesome Donkey:

--- Quote from: bob on March 20, 2017, 11:44:12 am ---In the ALSA version that wheezy supported, the HW: device wasn't displayed as a choice, the ALSA in jessie now shows those as well.
--- End quote ---

Yeah, in my Arch Linux install it doesn't show as a choice either so I use front: without issue. However, my Ubuntu install does show it so I do use it.

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