Sennheiser HD 660S2 – Audiophile Open-Back Over-Ear Headphones with Deep Bass Extension and Refined Acoustic Performance, Headphones for PC, Music, Gaming, Podcasts, Premium Black

Price: $679.95 - $435.63
(as of Feb 10, 2026 19:03:18 UTC – Details)

From the brand

We are audio experts and music lovers who’ve been striving for the best audio experience. Through the craft and precision of German Engineering we create innovative products to reinvent the future of audio with remarkable audio experiences that you don’t just hear – but feel. That is what the Sennheiser brand has represented for more than 75 years.

Intense Science

We are driven by the passion to create audio solutions that make a difference, by constantly rediscovering the needs of our customers.

Intense Sound

Our ability to redefine sound has continued to set the norm, allowing music lovers worldwide to experience sound in a new dimension.

Intense Emotion

As audio fanatics we strive for a remarkable sound you not only hear – but feel. We measure our success by the goosebumps on your skin.

We invite you to discover our wide variety of premium audio products, which are divided into the following four categories: Premium Headphones, Audiophile Headphones, Hearing Solutions and Soundbars.

Premium Headphones

Offering a wide selection of headphone styles from True Wireless to Over-Ear for premium music enjoyment no matter where you are.

Audiophile Headphones

Continuously striving to define new industry standards with headphones for both home and mobile listening.

Hearing Solutions

Seeking to provide market-leading enhanced hearing products​ from TV listening to situational hearing.

Soundbars

Providing outstanding immersive sound experiences for home entertainment by a single device.

Hear the Difference

Audiophile-Grade Open-Back Sound: These Sennheiser over the ear headphones provide a natural, high-fidelity sound with a spacious soundstage. The over the head HiFi headphones are great for immersive music experiences and long listening sessions
Precise Highs & Deep Sub-Bass: Sennheiser open back headphones HD660S2 with ultra-light aluminum voice coil & 42mm transducers deliver detailed highs, rich mids, & deep, controlled bass. Overhead headphones are great for gamers, professionals, podcasters
Powerful Low-End Performance: These wired over ear head phones let you feel every note from piano lows (27.5 Hz) to bass drums (45–60 Hz) with clarity and precision, whether it is for gaming sessions, listening to music, or for desktop use
Exceptional Comfort: Open-back design with breathable, plush ear cushions ensures fatigueless listening during long sessions, making them audiophile headphones that have a comfortable fit and can work for music listeners or as gaming headsets
Premium Build Quality: Sennheiser HD 660S2 audiophile headphones are crafted with expertly crafted materials in Germany & Ireland for durability, elegance, and long-lasting performance, making them head phones over ear for music lovers & music production