Hi Guys, I have posted on the Line 6 forum as well. Maybe someone here has experienced this before. I tried to re-amp using a real amp and my tone port UX8 with no success. All outputs from 3 to 8 (1 and 2 is for my monitors) produces extreme hum or "SHHHHHHHHHHHH" sound when plugging it into my Real guitar amp. I do not even have to send a signal through the output to produce this noise. As soon as the jack is connected the extreme "SHHHHH" starts. I have tried isolating the problem and found it must be the TonePort itself. I done the following tests: 1) To eliminate the cable I plugged my guitar into the cable that goes to the amp - NO NOISE. I immediately unplugged my guitar and plugged it into the TonePort - NOISE 2) I have switched off everything else e.g. Computer, Monitors. Only my tone TonePort was on. SAME NOISE. Does anyone have ANY other suggestions? I am at the point of getting rid of the TonePort. Another user experienced the exact same problem in this thread: http://line6.com/supportarchivenew/thread/91525/ Thanks in Advance.