[PROBLEM] Smsl D300 Dac - loud "pop" noise before playing the first song

[happymax]

Very odd. When you set moOde volume to 0 what is ALSA volume?

Code:

amixer -c2

In any case the fact that there is no glitch with Foobar player and the smsl USB drivers suggests a bug in the usb audio driver in Linux or possibly an issue with the USB stack on the Pi.

Upcoming moOde 8 is based on a newer version of RaspiOS, the "Bullseye" release, and the 5.10.y or later Linux kernel. Maybe this platform will not produce the glitch.

Thank you Tim for the info about the new release.
This is the output:

Code:

Simple mixer control 'SMSL USB AUDIO ',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 127 [100%] [0.00dB] [on]
  Front Right: Playback 127 [100%] [0.00dB] [on]
Simple mixer control 'SMSL USB AUDIO ',1
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 127
  Mono: Playback 127 [100%] [0.00dB] [on]

moOde is my reference player, I will never change it; thank you for your immense commitment to this project!