I played my Traynor YBA-1 and my new Laney AOR Pro Tube Lead 50 at full volume through the 4x12 a few times since the weekend...very nice. Have to recap the Traynor and give it a tuneup. I don't care what anyone says about cranked small amps, they just don't have "it" compared to big amps. To be fair my little Gibson GA-8 actually has a better sounding overdrive than either of the big amps, but it doesn't quite get the same effect with the lower volume. I'm going to put a speaker output jack on it so I can run it into the 4x12 and see how it does.