Getting an unusable hiss/crackle out of my Stomp when i go to my amp or to FOH PA. I have tried different amps, different outlets, different surge protectors, different PAs. Oddly, it does not do it through the headphone jack as far as I can tell. I have factory reset it as well and no improvement. The problem stay even when Stomp is bypassed. Any ideas? It's still under warranty I believe.