I am wondering how to solve this problem: My flatmate plays bass guitar and I play electric guitar, we live in a block of flats so we have to use headphones. We would like to play together, ideally with 3rd track as backing track from PC.
Is there any device which would allow us to merge output from our amps into one cable which we would latter split with jack splitter to two separate headphones?
Scheme of my idea: https://pastebin.com/qFZX2ipa
I have Behringer Uphoria UMC 204 HD which has only 2 Jack inputs (and some other inputs), I don't know if it will help because I haven't fully figured out how USB interfaces work yet, for now I can only plug in my guitar to it with JACK "Y" cable (it changes one stereo [output from an amp] to two mono paths [2 jack inputs in UPHORIA]) and then record it.