I got the SE-MJ751's today, and I have to say they have a somewhat unique sound. Firstly, they are marketed as 808 (dubstep), deep bass, basshead cans, and rated down to 8hz, but they really don't appear to go anywhere near that low. Maybe they're fake? (only paid like $37 shipped). I tried playing some rap songs which were very punchy and deep on some of my other headphones, and instead they just seemed to be farting air, rather than playing anything deep. Almost as if the bass was slightly out of phase.
They do sound agreeable with rock, pop, etc.. and have nice, punchy bass, right out of my phone. Mids overall sound nice, but can be shouty or nasaly at moderate volume, which I don't like. I'm hoping that it smooths out with some burn-in. Anything prone to harsh highs sounds surprisingly nice. Which brings me to my next point. The treble is very laid back, and a bit recessed/muted. It is extremely smooth, incapable of being harsh, but has sparkle and shimmer to it. It reminds me of a silk dome tweeter. The treble has a natural sound to it, that sounds more like a home audio speaker than most headphones. This is a surprising bonus, as I am very sensitive to harsh sibilance, and tend to prefer phones with darker or very smooth treble (senn hd203, aviators, etc...). I have a pair of Roland RH-50's (also dual-driver) sitting in a corner of a closet somewhere. They have treble that's over the top and unbearable. So this is a nice contrast for a dual-driver headphone.
There are definitely things i like about them, so I'm hoping they will grow on me, with time, and/or burn-in. Do me a favor, and play "Wax and Wane - Remastered Version" by Deftones, when u get them, and tell me if u don't hear the same in the treble.
Edited by cam94z28 - 7/10/14 at 12:20am