Aspen, thanks for the perspective, I appreciate the thorough reply! Of course I'd be interested to hear what a tube amp might sound like with my laptop rig. Maybe someday I'll get that chance. Once at a rehearsal studio I used a Twin to play my Rhodes sample set, it sounded awesome (not so good on AP sounds as one might expect). I think the speaker & cab must have a say in shaping the sound too though. When both a SS and tube amp are not close to clipping, what is the tube amp doing differently? Adding subtle harmonic distortion not present in SS amps? Or is it how they couple to speakers? This could probably open a can of worms, I know the tube vs SS debate has been going on a long time and I don't mean to start anything! I know that for my gigs I really need clean, punchy (i.e. fast slew rate), low-noise amplification with tons 'o headroom for those times I have to dig in. Maybe what you're taking about is more of a product for the recording studio than a traveling musician's arsenal.