SOLD SOLD SOLDAKG 550 headphones in excellent condition, with box and ¼-inch plug adapter. Second owner, light use in non-smoking household, kept covered and clean when not in use.
To my ears, these are very comfortable ’phones, and sound excellent. They are also efficient and easy to drive. Many positive reviews online:
Headfonia.com: “At the end I just want to congratulate AKG for bringing such a technological leap into their new headphone. The K550 should be on the list of everyone looking for a new $300 headphone. I can’t praise it enough.”
InnerFidelity.com: “…a very well balanced sounding headphone, and, to my ears, bests the above mentioned cans [various Denon, Shure, Audio-Technica] in terms of overall performance.”
What Hi-Fi: “…what's profoundly impressive is just how unlike a closed-back pair of headphones they sound. …The overall presentation is expertly balanced. The K550s are sweetly communicative, handle tempos in a natural, unforced manner and punch into and out of low-frequency information with precision.”
Selling because I picked up a pair of AKG K702 65th Anniversary—not necessarily better, but different in a way that works for me at this time.
PayPal, please, and no extra fee at the asking price. US-48 sales only, please.
I have a long record of all-positive feedback on Audiogon:
http://cgi.audiogon.com/cgi-bin/fb.pl?user=jhold 
