I’m in an instrumental 3pc and shoot for the biggest, clearest sound I can achieve, then pull it back to make room for the bass and drums. For many years, I have been using one amp hard right, one hard left, an EL34 based amp and a 6L6 based amp. The impedance curves of each are different and will cause different types of compression, dynamics and tone contours in each amp’s output section, right? My idea was to try and replicate something like double tracking, or at least the idea of two simultaneous guitar players and slightly different amps, with their different tone and dynamics characteristics, panned opposite.
My old fridge rack had 2 JCM800 50w’s modded the same, one with EL34s, the other with 6L6s, dual mono each side. Great results, when satan and his ground loops had something better to do. Got sick of the fight and got an Axe.
Two amps dual mono dry is huge, but presents problems with downstream stereo effects if you wish to preserve the dual mono “stereo” image.
I was just about post a thread on this subject, so please let me know if anything above runs counter to your knowledge and experience before I post, thanks!