My small rig is a single channel into a 20/20. Its not a bad combo - sounds good thru the 2x12, it does color it nicely at gig/drummer volume. It does have the deep mod - never tried one with out it, so YMMV, but I do notice I need to bring the high end on the modules up a bit to make the mods sound like they do on the bigger power amps - my main rig is basically the same setup thru a Mesa 2:90 soon to be replaced with a VHT 2/90/2 (which is my favorite power amp - and I should have never sold the last one I had). Again it has a different sound than the bigger amps, but if your looking for the EL84 tone its pretty good. I also have a RM20 and a RM22 - and like the 20/20 a little better. The small rack and a midi board make for a really compact rig for me, that has no problems keeping up when it needs to.