So apparently the other girls of K-ON have decent taste (though AFAIK neither of these images are canonical - they're just fanart):
That is one heckuva holster for her DAP and amp (I'm presuming DAP and amp, of course).
Shures and a Fostex amp? Nice.
Man, browsing Danbooru with the tags "headphone -vocaloid" turns up some surprising (if occasionally NSFW) results. (I turn off the Vocaloids tag because Vocaloids contribute something like 309 pages of results [out of 531].)
I'd like to see them wear some HD 650s or HD 800