Let me explain: As a musician, I like to record a session using my Logitech web camera's video. But the audio, I record through my PreSonus Studio 26c interface using OBS. I first set the levels on my Presonus for my voice (inst/line 1) and my guitar (inst/line 2). At this point, as I'm listening, the stereo balance seems perfect to me. When I press the record button, I continue to hear my voice and guitar nicely balanced. But when I play back, I hear my voice 90% in my left ear and my guitar 90% in my right ear of my headphones. .... What I would prefer to hear at playback is the stereo balance the same as when I'm first setting the levels as above. I hope that makes sense.....Thank you, Tom