Thanks again for your prompt reply. Ok so I did a factory reset and tried the output levels etc.. Still no luck. I tried simplifying things and going directly into a signal splitter then into both inputs on the h7600 (I tried using both xlr and 1/4” and both worked fine) then I connected xlr on both outputs and went directly into each amp. It’s actually output 2 that works and output 1 that doesn’t. Funny thing is that there is movement on both input and both output meters but only sound on 1 amplifier. I have tested with swapping leads over and they are all fine. Another strange thing happened when I hooked it up through my switchers. When I engage the output that does work it is normal and as soon as I engage the loop for the output that doesn’t work the sound gets louder in the amp with the working output but cuts sound to the other amp.