Created attachment 128943 [details] blue yeti connection SUMMARY When I plug in my headphone in the headphone jack of Blue Yeti, the right side has more volume. It was not always like this. I also notice when I unplug and plug in the USB to the PC, there is a moment while the system is detecting the device, there is a slight hum and both side on the headphone are balance. Once Blue Yeti is detected, the right side of headphone is a bit louder. I would like to mention this just started happening in the last 2 or 3 weeks, before it would happen occasionally, now all the time. I have tested this on with my Macbook Pro with same cable and headphone produces balanced audio to both ears. I have also tested with my PC headphone jack and audio is balanced on headphones. On my PC I double check my motherboard for loose wiring, everything seemed good. I've tried different USB ports but always the same issue now, unbalance audio to the headphone. So far I've eliminated my headphone, cables and Blue Yeti as not being the problem. I also doubt my motherboard has a problem with all USB ports, but still a remote possibility. STEPS TO REPRODUCE 1. Plug Blue Yeti mic to PC 2. Plug in headphone to Blue Yeti headphone jack 3. Open Pulse Audio settings and click on "Configuration" tab. 4. Set Blue Yeti profile to "Analog Stereo Output + Digital Stereo (IEC957) Input" 5. Turn volume knob on Blue Yeti to 100% up, use PC volume to control headphone volume. 6. Listen to audio OBSERVED RESULT Unbalance output, right side is a bit louder. EXPECTED RESULT Balance output to both headphone left and right side. SOFTWARE/OS VERSIONS Linux/KDE Plasma: openSUSE tumbleweek KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.70.0 Qt Version: 5.14.1
It seems the problem may have been caused by looping/folding a long cable together, which could have resulted in some elector-magnetic interference. I am continuing to monitor if this is actually the case.
Closing for now, seems like issue was the result of cable interference.
The issue is back, unfortunately it's not the cable as I had hoped. Everything was working for 2 days and then after putting my PC to sleep and waking it, I am getting unbalanced audio with the right ear much louder in the headphones. I tired turning off the Blue Yeti, removing the cable and headphone jack and nothing seems to work. I've also changed and profile from Pulse audio system setting to something else and back to Blue Yeti and it is not fixing/resetting the unbalance audio problem. Finally I hooked Blue Yeti to my MacBook Pro and audio comes out balanced to both ears in the headphones. Also soon as I plug it back to the PC, the unbalanced issue shows up. So the headphone, Blue Yeti and cable have been eliminated as the source of the problem. I hope this can be resolved because it is very annoying.
I tested with an external DAC + AMP, (which Blue Yeti has internally) and it seems to work fine with balanced audio out to my headphones with no issues. So this also eliminates any problem with the PC (mobo) hardware and USB port. The other device I used for testing is the FiiO BTR5, connected in the same fashion to the PC using a USB cable and the headphone connects to the device headphone jack.
I can't see how that could be caused by KDE software. It's likely that for some reason Pulseaudio was set to have different left/right volumes. You can check that with pactl list sinks | grep "Volume:" If the front-left and front-right values are different then that's the explanation You can set them both to zero with "pactl set-sink-volume 0 0". Any volume change from there on should change both in sync. You may need to exchange the first 0 with the correct sink id though.