In terms of the definition, the sound stage and realism, these headphones - for my taste and my ears - largely outperforms the Sennheiser HD650 (attempted in two copies, both completely veiled in the treble) and Beyer DT 880 (very bland), to take two references appreciated in the same price range. It's simple: to find a better rendering and particularly best mediums and treble (incredible precision and smoothness) you have to put at least 4 times the price !!
Goodies: spectacular definition, treble very accurate (we hear absolutely everything, the nuances of the brushes on the cymbals, the fingers on the string ...), its very neutral (very low held, despite a remarkable extension in severe infra ) and a very wide sound stage for a closed helmet, worthy of the best open headphones. This is a real high-end headphones, and the overall rendering lets you hear every detail of the most dense orchestration. The voices and strings are especially flattered by the rendering very fine treble and upper medium, never aggressive but very present. Another argument, it comes with earbuds and a spare cable, in a beautiful box (not very practical). Comfort okay, I easily carries two hours without fatigue, but he slips a little head.
The most questionable elements: design, first. This headset is very ugly, while poor quality plastic. In itself this is not serious, but the finish seems highly qualitative, I do not know if it will be very durable. This is the price of its low prices without compromising on the sound, but it cost him a star. Sound, then will not please everyone. Basically, if you like bass, you listen to rap or RnB, go your way. If you listen to classical or jazz and want to appear neutral and hyper set, pulling a little on the treble, then you will be filled.
Warning !! Like all demanding headphones, Shure makes this a low sound with a mp3 player and amplifies compression defects. It requires a good integrated headphone amp or excellent sound card; even better, a dedicated headphone amplifier. And excellent sources (CD or FLAC exclusively) !!! Few hours of running are also essential for the acute softens. Do not judge at first listen.
Five stars (and widely) for its three stars for the quality of finish. Anyway, quality / price ratio.