I'm new to this amp, so hopefully I'm just doing something wrong here.
I'm trying to play a backing track (from the computer's headphone cable to the return loop jack on the back) while also playing the guitar. The track comes through fine, but when the return loop is plugged in, the guitar input seems to be getting bypassed. It's happening on both the high and low guitar inputs. When I removed the cord from return loop jack, it works fine.
I'm assuming that I should be able to play both a backing track and the guitar simultaneously.