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Glitchy USB audio

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MAS-Indy:
System:

Lenovo Thinkpad (Linux Mint 20.1) -> Schiit Modi Multibit DAC via USB 2.0

Has anyone experienced "glitchy" audio? I have (hopefully) eliminated the DAC as the glitchy source by changing the DAC input from a CD player using a coaxial digital output. NO glitches!
I have tried switching USB ports on the Lenovo; same result.
I am NOT a Linux guru, but I have searched for and tried a few things that seemed promising, with no luck.
I am completely open to suggestions.

Thanks.

warchild:
How are you sending the signal to the DAC? Unconverted? PCM? What path are you using?

stefano_mbp:
Are you using the right Audio Device?
Should be the one beginning with hw.

skidmata:
Could be poorly behaving power savings kicking in ?    Does it start after the laptop is otherwise idle for a bit ?
Another laptop specific culprit is extreme cpu throttling if some of your load is spiky.  Do you have any heavy backround tasks?

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