If you like quality sound and you don't mind paying a bit more for it, Grado Labs, Inc. is an excellent source for you. With headphones that surpass the quality of most anything I've ever used, the site gives you a history of the company and a break-down of the excellent craftsmanship that goes into each set.
With the Reference Series (RS1, RS2 models) and the Prestige Series (SR325, SR225 and SR125 models) including voice-coils wound from ultra-high purity, long crystal oxygen free copper, you know extra work is put into each and every pair. These features allow the headphones to bring you the clearest transmission and boast a low coloration, keeping your ears smiling.
Using hand-crafted mahogany wood in the Reference Series makes the headphones look classy and sound good, you can't ask for more there...and the Grado site has tons of information and specs. for each pair of headphones. Definitely a good spot for sound-lovers looking for an ultimate treat. The headphones are pricey but seem to have the quality to back that up.
