Pros: Great Bass, Good for Popular Genres such as Pop, Rap,RnB, sparkly highs
Cons: sibilance on some tracks, midrange is a bit recessed, leak a bit,
These are my first pairs of audiophile grade headphones. I jumped from crappy ibuds to this. This review will contain some detail but not much.
These headphones feel solid out of the box. They are made from hard plastic not cheap plastic but proper plastic. The only compliant I have is the swivel joints can make a bit of sound and is not smooth enough for my liking but I can assure you they are solid.
I think this is where the headphone lacks a bit. The velour padding on the cup and the headband are pretty soft but I wish the padding would compress a bit more. The clapping force is pretty strong out of the box(btw i have a small head) but they will loosen up over time. I found this problem where if the top headband was not positioned properly it hurts the top part of the head after half an hour, this won't happen if you place your headband properly.
Straight out of the box they sounded better than my ibuds but they didn't WOW me like I expected it to.
After around 5 hours of burn in.
WOW. The bass on these headphones are amazing. They are very tight, detailed, impactful and extends well. THe bass is top notch. On dupstep and electronica tracks I feel like i just WANT TO DANCE. The only compliant i have is that they lose some detail down in the sub bass region and on some tracks can be a bit overpowering.
As we all know the Pro 900s has a V shaped sounds which mean recessed mids. The midrange on these are recessed compare to the bass and treble but will gradually come out after around 70-90 hours of burn in. They won't end up with a flat response but will help cure the V shape to some extent. The mids are detailed and great sounding. They tend to lean a bit to the warm side, but i wish they could be a bit warm to suit my taste.
The treble are these headphones are sparkly and detailed. I don't find this headphone harsh at all although on instruments like the xylophone it can have a bit of sibilance. The treble is fairly smooth but will sound grainy on bad recordings.
These headpones works great with popular genres such as dupstep, pop, Rnb and such. I love listen to Ne-Yo on this as the bass is strong but not disturbing the vocal and for the first i heard the background singers. These headphone are fast works great with fast bass lines and bass drops on dubstep.
On genres such as rock, the lack of midrange might make the headphones feel a bit less energertic on guitars. But these clearly separates the instruments and the vocals and have great positioning.
On classical genres, the headphones have a great and wide soundstage. The positioning of instruments are fairly accurate though i think these lack a bit of depth in the soundstage.
I don't feel the surround sound of the s-logic to a great extent(maybe cause i have small ears). I heard that s-logic works for some people but not for others. To find for information you might want to go on the Ultrasone Pro 900 Appreciation thread.
Don't listen to low quality tracks on these. These are revealing headphones and will definitely reveal impurities in low quality recordings. I recommend source above 256kps, but if possibly please go for FLAC or 320kps.
These benefit greatly from a properly amplifier. I using the O2 amp btw. These might be rated at 40ohms but I assure you everything is better when there is proper amplification. With proper amping the bass tightens even more and extends a bit more. The mids are more detailed and overall more clear sounding. The highs extend more as will and will become smoother.
Overall I would definitely recommend this headphone if you listen to popular genres and want a fast sound. For other types of music these do great with them but not as good as other headphones in this price range. This headphone is very clear sounding and revealing.
You can find these in America for around $330USD. It cost me $439 because i purchased it locally in Australia.