Just to throw in my $.02. Neither of these amps are what I would consider warm sounding when compared to the TC Electronic RH450 or Classic 450. I have just picked up one of these and it really does deliver a warm sound. It does have a high end roll off and an AMAZINGLY powerful and flexible eq. The only thing you can't do is dial the uber high end back in. It weighs 8 lb's, is loud as hell, and sounds fantastic if you want more vintagey tone. It also has a buily in compressor and tube emulation circuit that I just love. You can score the Classic 450 new for around $500 I think. Cheers!