Well I've finally finished reading through this entire thread.. I got my pro 900s about 2 weeks ago, here are my impressions.
Out of the box: Bass sounded bloated and boomy. Highs were not piercing to my ears like I was expecting and sounded great. ( This could be do to my ultra bright speakers in my car ). The mids are recessed and sound distant, however they are greatly detailed! The bass really tightened up ALOT with <20 hours of burn in.
These things are addicting with dubstep and trance. At night I can't take them off lol.
I really don't understand how some people can say that these sound fine out of an ipod.. lol what the hell are you listening to. The bass has no punch and everything just sounds weak like it's lost its life source.
They sound much better with my xonar dx. Good bass, lots of punch, but the extension is lacking. I cannot wait until I amp these properly, I know they will wow me even more.
These have amazing detail retrieval and it's almost impossible for me to listen to anything below 320/flac now because I know I'm missing out on so much.
I previously had the hfi-780 with the O2 amp. This headphone was very aggressive and in your face compared to the 900. It sounded ok, but had no where near the amount of bass needed for bass heavy EDM music. I returned both and decided to just get the pro 900 and wait to amp in the future. People that say amping doesn't make a difference need to stop with the facade.. If I can hear a difference in the hfi 780, the pro 900 must be night and day.. we'll see.
The 900 is all around better than the 780 especially the SQ, bass, and soundstage.
S-logic is indeed kind of weird, but I like it. The instrument separation is superb. It kind of sounds like I can hear more sounds and details out of the left driver than the right, but I think this has to do with S-logic.. Everything is plugged in fine. I bought mine from B&H for $327.00.
I switched from the original stock pads to the other black ones because they are softer and more comfortable. I still need to do some more experimenting with the pads.
I'm pleased with my purchase, but I would like to listen to another pair to compare what I hear.
Edit: I plan on getting a fiio E11/E12 ( anyone know anything about the 12?) or maybe the E17. If anyone can compare the dac on a xonar dx with the E17 that would be awesome!
