Originally Posted by PurpleAngel
As your budget is $140, it's a little short for the headphones your looking into, unless you find a really good deal on used.
You might consider getting the Sehhheiser HD558s, Amazon sells used for $94.
What sources are you going to be plugging the headphones into?
I own the DT880s and DT990s, also the ATH-A900X closed headphones, so I'm guessing on the AD900X open headphone.
I guess later today all listen to all three headphones, before try to describe there differences in sound.
Actually, I've owned all three, the open AD 900x the DT 990 and the DT 880, for what it's worth the AD 900x is alike a fushion of the DT 880 and the DT 990, without the detail of either
I enjoyed the DT 990 very much for classical!
The AD900X has a slightly larger sound stage and a little more edge to it, with an aggressive textured bass, yet with a nice delicate body in it’s mids.
The Dt 880, has a slightly narrower but deeper sound stage, a tad more natural timbre and a slightly smoother yet equally detailed sound.
That's what I gleamed after listening to the two back to back, and this was at the time out of my rather Warm Matrix M Stage Amp
here is a link to the full review