I like my DT990 Pro 250ohm headphones a lot. I've had them long enough that I'm on my 3rd set of velour pads now. I power them using my Yamaha C-80 Preamp (~1984) and it works great. I've built up my stereo over the years (mostly vintage components) to the point where it sounds quite good now. Problem is, my stereo & speakers now sounds so much better than simply listening to my headphones that every time I am using headphones and hear a song I enjoy, my first thought is usually about how much better it would probably sound on my stereo using my speakers. Mainly it seems like the sound from my speakers has a higher degree of refinement in the form of more clarity, detail, and tighter bass. I still like the sound signature of the DT990 overall though, which makes me hesitant to move to a completely different headphone. Would moving to something like a DT990 Premium 600ohm possibly give me what I'm looking for? Do I have to move up to something like a T90 (The T90 is not really within my budget but I use headphones enough, maybe I could justify it anyway)?