Hey guys. So I've been having some serious problems with my UX1 and Pod Farm. When I play into headphones, no problem. When I plug into an amp (UX1 Phones out>>Amp return input) or a DI running into a board and then a loudspeaker, my sound will cut in half and make this fluttery warbly sound. I have a friend that does the same thing but has no problem. Any ideas? My Pod Farm and Macbook Pro are both updated to the newest operating system and everything. Let me know if you can help. Thanks!