No doubt, but I wouldn't restrict the choice to tube amps. I've just recently changed from the veteran Marantz SR4200 HT receiver I was using, which till then was the best I'd heard with my DT880 Pro, to a new Marantz SR4023 stereo receiver, and it's the first time I've wanted to listen to the Pros completely flat, with no treble reduction at all. I'm no expert on tube amps, but I imagine the 4023 has a very similar balance--creamy smooth with a quite full low end but no overall loss of detail. For those who don't want the hassle of tube amps--and they can be a hassle in many ways--this Marantz receiver, and perhaps others in the Marantz line, could be a possible alternative. Plus of course you get the convenience of electronic volume, remote switching etc.
nice. i found to my suprise my matrix solid state drove the 880 far more nicelt than my tube