I just got a new used Peavey renown 400 and when playing threw my GNX1 ((i can't get the sound to work right on any of my speed demon solos, it just sounds like shit.)) iv tryed all i know, what do i need to check, what am i doing wrong?? i (with my Guitar) get a grate sound with anyone ealses setup, so i ask questions but ther all just starting out and dont know a dam thing about how anything works and are just luckey thave got the right sound to work with. Im tired of going to friends houses to play and practice. i havent used my GNX1 on their amps yet and im unable to barowe one of their amps or fxs right now, to pinpoint my problem, so i came here.
Is it my Amp or is it my GNX1? Please help fix my problem.

