Created attachment 838432 [details]
lsusb -v output

I'm running Tumbleweed 20200528 with kernel 5.6.14.

There is an issue with the Kingston HyperX QuadCast USB microphone + headphone
interface (USB 0951:16df). The microphone works fine, but the headphone output
only produces sound when the volume in KDE Plasma/ALSAmixer is set at 31% or
higher. At 30% or below, there is no sound from the headphone interface. In
Windows and macOS, audio output starts from 1%.

I'm not sure whether this is the right place to report or if it should've gone
upstream. It seems like this device may need a quirk entry in ALSA, but that's
just a guess.

I know this will be difficult to diagnose without direct access to the
hardware, but am happy to provide more information or test any patches. I will
attach alsa-info and lsusb -v output.