Seriously, though, the DT150s are some of the easiest headphones I own to amp properly. As long as they are getting a reasonable level of juice, they'll play pretty well with any equipment. I do like how they sound with my tube amp, but they do equally well with a desktop SS amp. If you find them too bright, a tube amp will help with that, but solid state makes them sound really really tight. Guess it's all about preference.
I see what you're getting at:) I'm looking into the DT150s and not a lot of amp reviews in combo with them.
Currently own SR225i's and a Little Dot I+.
I'm sensitive to too much trouble (fatigue) so was looking for my holy grail which would be somewhat rolled off highs, but good sound stage, musical separation and of course the other good stuff (good mids, tight bass) without making the headphones too slow/sluggish.