I just picked up a Mesa 2:fifty stereo power amp. Set up a wet/dry/wet rig. Mark V into 2x12 recto.. slave out to stereo effects: Nova Delay>Nova Mod>Rocktron Intellifex stereo out > to 2:fifty power amp>right and left thiele EV cabs. I am in TONE HEAVEN ! Im running el34's in the mark v and 6l6's in the 2:fifty...... it sounds amazing ! I was using a cheap stereo solid state power amp before and I thought that sounded good. Unbelievable how much better it sounds with the 2:fifty