m2tech hiface dac: Volume type software not working?

[Nutul]

IF Fixed worked and Software set to 100 did not then it's a mystery to me.

It's unusual for a USB DAC to not support Hardware volume so I'm guessing the m2tech device is kind of old?

I believe it's about 10 years old indeed.With fixed output it sounds pretty good, quite bright and clear, bass is less pronounced. 

Found some reviews:

https://www.headpie.net/2016/06/m2tech-h...eview.html


https://www.tnt-audio.com/sorgenti/m2tec...dac_e.html

https://www.whathifi.com/news/m2tech-hif...nds-review

At the end of the 2nd review there is a mention of no sound in Linux, and the channels being "muted", opened alsamixer, selected the dac, pressed M to unmute, everything worked. The toggle is permanent. Worth a try, uh? Windows systems were not affected (maybe the drivers help, there)