Coming from someone who has a D2000, HAD a DT770, and also has a D600, both Denons trump the Beyer TO ME. The D2000 forget about if you want portable, but the D600, tho a radical departure from the early Fostex-built phones, is still TO ME a great can and I paid $239 refurb price. Worth every penny. Plenty of highs and mids regardless of what the graphs show.
If you like bright treble, maybe an Ultrasone Pro900 is your style. They too are great for bassheads as well, great for portable use and I found them for $236.
Lol i have a similar problem as him, except i am looking for an amp upgrade with a quality bass boost, as the fiio e11 just makes things muddy.
i only have like a 150$ budget, and i cant find the jds labs one used (unless you could link me to one ... pretty please :3)
The E11 makes things muddy because ur boosting upwards of 10db's of bass.... that's kinda to be expected. It's a pretty clean amp and trust me most BIG bass Boost are going to sound like mud.
Granted there might be some out there I've not heard that keep things tight but, within time hopefully you'll start to apprecaite an enjoy milder bass boosts and tighter bass cans
Also on a sad note I ave to sell my Dt 880s, on a positive note I can EQ my 990s so sound like my 880s [I kinda hate eq but I hate not having a house even more] Which just goes to show the versitility of the 990, granted it doesn't have the thickness of the 880s bottom end [which is very tight, but still has some UMPH in it] But I can use a tube to get that.
Still I highly recommended the dt 990s for any bass head, with a little eq there's SO much you can do with them!