I bought a pair of PRO 900 headphones a couple of months ago (excellent price from IHeadphones in the UK), I'm not sure if this is good or bad thing but these headphones are the closest I have come across which give a listening experience close to my speakers, I think this may be due to their excellent bass response, some have critisied the PRO's as having excessive bass, I have found the bass to be excellent in fact the best bass I have heard from headphones, just right tight and with nice weight(very often lacking in headphones) double bass reproduction is again excellent, my main critisms (not major given their other attributes) are a slightly narrower sound stage and the awful 3.5mm connector to the headphone unit with which I initially had a lot of trouble in getting a good connection, I now leave the cable connected all the time to avoid this problem, although the headphones are well made the plastics don't quite have the quality look and feel of my previous AKG 701 headphones, but as the PROs sound so much better overall than the AKGs I can live with that. I have found the PROs match well with my LIttle Dot MKVII amp(which I also use with my Beyer DT880 in a balanced setup) but not with a MF V3, the PROs can also be driven directly by my Iriver 120 or my Cowon Q5 mobile players to resonable levels with their volumes flat out. Overall an excellent headphone one of the best on the market at the present time.
