-ohm driver, making it significantly easier to drive than the 300-ohm HD 6XX. 3. Power Requirements
Vocals are intimate and present. It is often described as a slightly warmer, tighter, or "thinner" sounding 660S. -ohm driver, making it significantly easier to drive
Offers more punchy and articulate sub-bass than the HD 6XX, with a "clean" and "fast" low-end response. differing from the purely analytical
is celebrated for its "fun" and versatile sound, differing from the purely analytical, warmer signatures of its siblings (HD 600/650/6XX). providing better spatial imaging
Generally comfortable, but known for a high clamping force out of the box that breaks in over time. Driver: Features a unique
Slightly wider than the 6XX, providing better spatial imaging, though it remains a generally intimate open-back experience. 2. Design and Comfort