Sennheiser HD 660S2: Emotive Bass and Powerful Range –

Sennheiser’s new HD 660S2 is an upgrade for audiophiles seeking exceptional detail with engaging low-frequency performance Sennheiser's updated HD 660S2 expands the capabilities of the 600-series family, the longstanding benchmark for high-performance audiophile headphones. Sennheiser responded to the hi-fi community's

Sennheiser HD 660S2: The Next Generation Audiophile Sound

Sennheiser HD 660S2 Over-Ear Headphones

HiFi Reference Evolution: Sennheiser HD 660S2 Review

Sennheiser HD 660S2 - Reviews Headphone Reviews and Discussion

Sennheiser HD 660S2 Wired Over-the-Ear Headphones Black HD 660S2 - Best Buy

I don't mean to break up the anti-660s2 circle jerk, but I just got mine and they sound amazing out of the box. They have more bass than I was expecting and

Sennheiser Consumer Audio HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black : Electronics

Sennheiser HD 660 S2 Open Back Headphones

Emotive bass and powerful range

Sennheiser HD 660S2 thread, Page 223

I get it now. These are incredible. : r/headphones

Sennheiser HD 600 Open-back, over-the-ear headphones at Crutchfield

Sennheiser HD 660S2 - Reviews Headphone Reviews and Discussion