At the moment, has Sennheiser HD600 reduced to $249.19 Edit: Also $249 at headphones.com Thanks to Rhodey for pointing that out. See his provided link below.
Sennheiser Consumer Audio HD 650 - Audiophile Hi-Res Open Back Dynamic Headphone, Titan : Everything Else
Sennheiser Hi-Fi Professional Stereo Headphone, Model HD600 The HD 600 is an audiophile quality open dynamic hi-fi/professional stereo headphone. The advanced diaphragm design eliminates standing waves in the diaphragm material. The HD 600 can be connected directly to hi-fi systems of the highest quality, in particular DAT, DCC and CD players. This headphone is an ideal choice for the professional recording engineer recording classical music.
Sennheiser HD 600 Headphones
Just bought the Sennheiser HD 600, my first open-backs. : r/headphones
Sennheiser HD600 HI-Fi Headphones : Electronics
Sennheiser HD 600 Over the Ear Headphones - Black for sale online
How come there's two versions of HD600? Also tips on driving these using iPhone. A dongle dac? Thx :) : r/headphones
First post - questions about Sennheiser HD 600 Headphone Reviews and Discussion
Sennheiser HD600 Open-back Audiophile Hi-Fi Headphones for Mixing & Mastering Boxed - *SOLD* - Accessories & Other Musically Related Items For Sale - Basschat
PSA: Sennheiser HD 600 Headphones $249-299 on , HD 6XX $199 on Drop