I'm about to try running two amps at once with the band, a UK reissue AC30tbx 2x12 and a Cornell 18w Plexi 1x12. I already know there's an issue with humming and have a Lehle Little Dual on order to hopefully solve that. I do not yet know if there'll be any phasing issues and wondered if such a thing could be predicted according to the type of amps used? Or, do I just have to suck it and see what happens? Many thanks for any help, Tea.