The HD 58X launches Friday, December 22 at 6 a.m. PT for $149.99
Quantities will be limited to 5,000 units.
Looks fantastic IMO - gotta wonder about the HD6XX at just $50 more though.
Going to look for any reviews or tester comments now, but I wonder how the new 150 ohm driver differs from the one in the HD660?
The HD58X is, after all, $350 cheaper.
Fantastic value at $150 though, assuming it's not a total dog, which knowing Sennheiser it won't be.
Post Script: the good folks over at Head-Fi have started a thread: https://www.head-fi.org/threads/massdrop-x-sennheiser-hd-58x-jubilee-review-measurements.867972/