Failed to open "ALSA Default" (alsa); Failed to open ALSA device "_audioout": No such

[Relocated2007]

@Relocated2007

Sorry if I distracted with a synopsis of several new moOde features.

For a USB DAC, moOde simply "talks" to the Linux USB driver and leaves the nitty-gritty intercommunication to the Linux sound subsystem.

Some DAC vendors do things in non-standard ways. Many of these "quirks" are dealt with in the Linux sound subsystem codebase with catchy names like quirks.c, quirks,h, and quirks-table.h. (Case in point, a DAC might lie about the bit-sampling range it accepts when queried through the USB interface.)

One reason a newer kernel+modules might solve a USB communication problem is if the offending device has been added recently to the quirks codebase.

However, I don't believe the Rotel A12 with Wolfson WM8740 DAC requires a newer kernel. Checking the DAC Compatibility List over at Volumio, I see that a user already reported success with their Rotel A12 in 2019.

I found the following commentary about the Rotel A12 (with Wolfson DAC) on whathifi.com 

Speaking of digitally-stored music, also worth noting that while the front-panel input [e.g., the USB port] can accept content on memory devices, its capability is somewhat limited: it'll only accept AAC(m4a), MP3, WAV and WMA (up to 48K 16 bit).

So if you want to play FLAC or Apple Lossless files off a memory stick, as we did at the launch of the 12-Series products down at Rotel distributor B&W in Worthing a while back, you'll be scuppered.

However, the built-in Wolfson WM8740 DAC supports files up to 24-bit/192kHz via the conventional digital inputs, so higher-resolution files could be played into it via a computer with a digital output, or one combined with a suitable USB-to-S/PDIF interface.

You might consider using an I2S-S/PDIF hat rather than a full DAC hat. If nothing else, they are cheaper

Regards,
Kent

 Mate! you strike gold with that post. Ingenious idea. For time being as my budget suffers a bit from buying some gears. And it might work just right for me.

Appreciate it a lot. 

However, wtf ROTEL put that USB-PC  port only to works with Windows comps, that is discrimination act, going to report them to human rights ;-)