Hi, I was looking for some help and I found Your topic. Im facing the same problem in my HX Stomp but it happens only in the left output. I play higain music and this buzz makes the sound awful. I took it to local authorized Line 6 service in my city and the guy said that everything is fine and I should reduce some Hum/other stuff here and there. But it doesnt sound OK. It is hearable only with higain amps etc. It happens ONLY in left output (on the gig the foh guy said that I sound like Im not using an IRs. It was buzzing too). In the right it sounds how it should. Furthermore, I was using POD GO before switching to HX, and I didnt have problem like this. Both outputs sounded good. I dont know what to do. Probably I will send it back to the seller and they will send it to other service. The only thing I can do is praying that they will hear anything and wont check only clean amps etc.
