New Sennheiser Hd-650 / Hd650 Headphones + 2 Year Warranty. The Sennheiser HD 650 open-air dynamic headphone is a music lover's dream: easy to wear and downright intoxicating to listen to. Sennheiser is, hands-down, the number-one name in high-quality headphones, and for good reason. From the issue of its legendary HD 580 headphone in mid-'90s, the German company has cornered the market on ultimate over-ear sound coupled with ultimate comfort, an unbeatable combination. With no need to reinvent the wheel year in and year out, 2004's titanium/silver-colored HD 650 is only the third top-of-the-line incarnation since the HD 580, following the classy HD 600 (and not counting Sennheiser's made-to-order $15,000 Orpheus electrostatic headphone). Is each issue better than the last? Fundamentally, yes, though they're also simply "different." Taking as a starting point that each is truly excellent, the 580 might be said to focus on glorious midrange; the 600 makes a point of delivering extended, exceptionally airy high frequencies; and the 650, fittingly enough, tackles the most difficult area of sound for small drivers to handle: deep bass. (less info)