VMInnovations, a Sennheiser authorized dealer, has refurbished HD 650's available at http://www.vminnovatio
Their list price is $298.99. This drops further with a 5% off coupon code for Memorial Day (Coupon Code: MDAY) bringing the price to $284.04. Standard S&H is free, though you can opt to pay more get them faster.
Deal Details -- The headphones do *not* have a full 2 year Sennheiser warranty, but rather their 90 day refurbished warranty. They do not come with the original box, packaging, or manuals.
Product Details -- These headphones (as well as the Sennheiser HD 600, the other still-in-production member of their line) are more or less the benchline for "audiophile" headphones. Paired with a decent DAC, source, and amp, these headphones are in contention for the best bang for the buck in hi-fi headphones. (This is especially true at this price, which is a decent discount.) These will not run well off of mobile devices, such as smartphones or iPods/Sansa's, without a mobile amp -- and a fairly substantial one due to their 300ohm impedance. (Reference point: they run fairly badly off of an E17.)
- find a fantastic review by Tyll at InnerFidelity (http://www.innerfideli
- check out user reviews and experiences in the head-fi appreciation thread (http://www.head-fi.org/t/197776/s...n-thread);
- get a good sense of their price/performance ratio from David Mahler's epic flagship headphone megathread (http://www.head-fi.org/t/634201/b...user_HD650).
Thanks for looking, and if I can answer any questions/refine the above information, feel free to post below.
Refurb Amperiors for $160 AC here.
New Sennheiser Amperiors (silver) for $182 AC here or blue for 194 here.
Momentums here for 224
You can also find Beyerdynamic DT880 Premium (600 Ohm) here for $259.00 with the coupon code BEYER880 used at checkout. This is another pretty solid deal with free UPS ground shipping.