It makes this kind of interference sound http://vocaroo.com/i/s0WfWYHQ9bBa. I have done a reset 2 times and my amp is connected to grounded socket. ESP LTD M-50 and Peavey Vypyr 15.
UPDATE. I managed to get a clean sound, but only when my volume knob on the guitar is full and tone low. If I move either of these the sound comes back.
The problem was in my amp. I bought a new one.