Sound card management with Alsamixer

hi all,
i am trying to set up my USB sound card with AlsaMixer because I want to send uncompressed audio to it.

The problem is that actually if in the terminal I write aplay -L it says
aplay: device_list:274: no soundcards found…
and in the Alsamixer app I see configured PulseAudio as a card and chip.

Here If I press “select sound card” it says no card detected.

Actually my audio outputs correctly on the USB sound card but is bypassed by PulseAudio and the audio quality is not good so… what can I do to add here my USB sound card? The problem is that in the raspberry os here I see the integrated Broadcom card and my external USB PCM Sound card and If I select my USB sound card there’s a great sound quality. Here I have PulseAudio that is decrypting the audio and send compressed audio to my sound card so the audio quality is not good.

Someone could please help me or tell me where I can find documentation about that?
I searched a lot online with no results :frowning:

thanks

@nikogu Did you ever sort this out? I have the same issue…

no. i still have this issue…