Pros: Great bass, smooth yet extended treble, mids, and an amazingly wide soundstage
Cons: perhaps build quality, and the short length to Y-split
I can't add much to the above reviews. They are some amazing universals. I can't understand any comments that the treble is lacking. To me, that comes from the 'trebleheads' who think the end all be all of audio is just how much extension we can eek out of the top end. Puh-leeze. There is so much more to these earphones, from the wonderfully tight and deep bass, to the natural clean mids, to the awesome detail and layering to their particular top end while remaining so supremely smooth without any hint of harshness or sibilance. The result is such a level of cohesive sound that it's addicting.
But be sure to have access to some extra brands of tips beyond what is included, and do some experimentation. It pays off huge dividends.
Freq. graph, courtesy of mr. dfkt!