Oh okay, well they're easy to drive. I've read people say they need amping to get the best from them, but I haven't heard much difference in their response since getting an amp, to be honest. They should sound great from your GS3 with PowerAmp (the bass and treble tweaks in PowerAmp work great with the M4U1s, especially as they lack a little bass presence, for me anyway).
My main issue with them is something I'm coining as 'Feetback' which is basically where every step you take creates a thudding sound within the headphones. This can be a bit off putting if you're not listening to louder passages of music, and it's ended up giving me a headache once or twice (though in fairness my ears are sensitive these days anyway). I also find their isolation isn't that great. It's not bad, but it's not great. They're quite microphonic as well, but I find it interfering a lot less than the 'feetback'. The thudding sound really is irksome, considering the whole point of portable headphones is that you'll be walking around a fair bit.
Having said that, I love their sound a lot. They strike a perfect balance for me. Good clarity without being bright. Warmth without being bloated. Neutrality without being cold.
Have you ever had a pair of headphones on and pressed them closer against your ears? Did you think they sounded better and wished they always sounded that way? That's exactly what the M4U1s sound like. However this does mean they sit close to your ears and so may be uncomfortable if your ears stick out a little. I find mine get uncomfortable after about 2 hours, maybe more, however I don't really use them longer than this and they're very comfortable up until then.
Oh yeah, I dislike the Beats look as well, and it put me off at first. They are big on the head as well, but again the sound comes first.
