Rocking headphones!
I bought these for computer gaming, but these these headphones are great all around. I used to own sennheisers, but these headphones blow them out of the water. More >>
Jason M. Kluczyk

Great all purpose headphone
I have had the luxury of listening to lots of top level headphones. I have the Audio-Technica ATH-A700 and ATH-AD700, ATH-A900, ATH-AD900, ATH-AD 1000, ATH-AD2000, and ATH-5000; AKG 271, 240, K601, and K701; the Beyerdynamic 770, 880 and 990; Sennheiser 280, 600 and 650; Grado GS-80, GS325i, RS-2, GS-1000; Sony 7505, 7509 and 5000, Denon 2000 and 5000. More >>
L. Topper

Keeping these, selling my HD650s.
I own the ATH-AD900s and the Sennheiser HD650s. I am going to keep the AD900s and sell the HD650s. That should tell you all you really need to know! More >>
Mark Pulliam

Detailed but not dramatic enough
>> Sound:

The ATH-AD900 highlights trebles and mids. The bass stays politely in the background. More >>
Nils Valentin

AMAZING phones, but very minor things...
First I have to say the sound quality is AMAZING with these phones. I have long used in-ear buds (Audio Technica CKM70). More >>
Frank Chun Yat Li