Snd_usb_audio "power save feature" makes popping sound

The title says it all. I have a external sound card M-Track Solo and I can hear this pop sound before audio is played and few seconds after the audio finishes playing. It feels to me as some sort of power save feature, but for this module, there is no such power_save parameter. The pop is really annoying. Anyone have a tip for what should I do? Thanks in advance. :slight_smile: