So I know Yorkies are usually "clean/transparent" amps, but this one has the tube overdrive channel built in. Has anyone tinkered with it enough to see if it can closely dial in "that Ampeg tone" with the overdrive on it?? I need a new amp and played a Ampeg B2R the other weekend at a gig and loved the tone, but it crapped out during our set and left me with a bad feeling. I've also heard the Ashdown MAG300 can come close the the Ampeg tone, but also may have some reliability issues as well. Right now I run a Sansamp BDDI into a SWR 2x12 combo, but the thing is getting too heavy to lift (recent back injury forcing me to change my setup) and I'm getting tired of hauling a pedal around. I'll be sticking whatever head I get on top of 2 Avatar 2x10s (once again, a 4x10 is too heavy for me anymore).....opinions???