Home Audio Sennheiser HD 660S2 Wired Over-the-Ear Headphones

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

Price range: $428.99–449.95
Brand: Sennheiser
Category: Audio
A pair of Sennheiser wired headphones featuring 8 Hz–41.5 kHz frequency response and 300Ω impedance.
PQS: 98 (computed 2026-03-14 07:04:58.940029+00:00)
GTIN-14: 00810091270370
Sennheiser - HD 660S2 Wired Over-the-Ear Headphones - Black

Key specs

A human-friendly subset of specs (non-null)
Frequency response
8 hertz - 41.5 kilohertz
Impedance (ohms)
300
Wireless (BT/WiFi)
Wired

Offers

Retailer SKU Price Stock Offer Last seen
B&H SEHD660S2 449.95 USD In stock View offer → 2026-03-14 02:34:25.838815+00:00
Best Buy 6531348 428.99 USD In stock View offer → 2026-03-14 02:53:20.620782+00:00
Newegg 9SIADM2KE56862 449.95 USD In stock View offer → 2026-03-13 02:23:19.278621+00:00

Recent price history (50)

Retailer Price Stock Seen at
bestbuy 428.99 USD In stock 2026-03-14 02:53:20.620782+00:00
bh 449.95 USD In stock 2026-03-14 02:34:25.838815+00:00
bestbuy 428.99 USD In stock 2026-03-13 03:03:06.325001+00:00
bh 449.95 USD In stock 2026-03-13 02:43:11.319639+00:00
newegg 449.95 USD In stock 2026-03-13 02:23:19.278621+00:00
bestbuy 432.99 USD In stock 2026-03-12 02:53:55.647854+00:00
bh 449.95 USD In stock 2026-03-12 02:38:22.376808+00:00
newegg 449.95 USD In stock 2026-03-12 02:23:35.737048+00:00
bestbuy 432.99 USD In stock 2026-03-11 02:51:47.173936+00:00
bh 449.95 USD In stock 2026-03-11 02:41:10.625664+00:00
newegg 449.95 USD In stock 2026-03-11 02:13:45.747077+00:00
bestbuy 432.99 USD In stock 2026-03-10 03:01:26.781025+00:00
bh 449.95 USD In stock 2026-03-10 02:32:03.486877+00:00
newegg 449.95 USD In stock 2026-03-10 02:21:12.408915+00:00
bestbuy 432.99 USD In stock 2026-03-09 03:01:00.569137+00:00
bh 449.95 USD In stock 2026-03-09 02:39:19.202615+00:00
newegg 449.95 USD In stock 2026-03-09 02:27:15.432536+00:00
newegg 449.95 USD In stock 2026-03-08 05:46:21.136818+00:00
bh 449.95 USD In stock 2026-03-08 05:45:51.464506+00:00
bh 449.95 USD In stock 2026-03-06 09:04:20.768129+00:00
newegg 449.95 USD In stock 2026-03-06 08:44:06.054518+00:00
bestbuy 433.99 USD In stock 2026-03-06 06:14:19.955988+00:00
bh 449.95 USD Out of stock 2026-03-03 02:39:30.182321+00:00
newegg 449.95 USD Out of stock 2026-03-03 02:22:22.588508+00:00
bestbuy 435.99 USD In stock 2026-03-03 02:04:38.850690+00:00
newegg 449.95 USD Out of stock 2026-03-02 10:42:34.283913+00:00
bh 449.95 USD Out of stock 2026-03-02 10:41:06.653023+00:00
bestbuy 449.99 USD In stock 2026-03-02 08:12:44.255934+00:00
bh 449.95 USD Out of stock 2026-03-02 06:25:29.391596+00:00

Full specs

Show full spec table
Frequency response8 hertz - 41.5 kilohertz
Impedance (ohms)300
Wireless (BT/WiFi)Wired
Reconciled at2026-03-06 10:56:32.254648+00:00
Canonical JSON (expand)
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Related products

Simple similarity over extracted specs (publish_set only)
Debug data (expand)
Raw title Sennheiser - HD 660S2 Wired Over-the-Ear Headphones - Black
Raw brandSennheiser
Raw categoryBest Buy > Headphones > All Headphones
Canonical highlights (non-null)
core.title Sennheiser - HD 660S2 Wired Over-the-Ear Headphones - Black
core.seo_title Sennheiser HD 660S2
audio.wireless Wired
audio.impedance_ohms 300
audio.frequency_response 8 hertz - 41.5 kilohertz
brand Sennheiser
model HD 660S2
gtin14 00810091270370
images[0] https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/6531/6531348_sd.jpg
category audio
physical.width_in 7.0
physical.height_in 7.0
physical.weight_kg 0.5
physical.dimensions_in 7 x 7 x ? in
warranty.labor 2 Years
warranty.parts 2 Years
schema_version 1
BestBuy raw specs (pretty)
Expand BestBuy raw JSON
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  "longDescription": "Despite the HD 660S’s standing as one of the world’s popular audiophile headphones, some customers nevertheless wanted one very specific enhancement: even deeper bass. Because whether it’s a thunderous crescendo of timpani or the pulsating beat of electronic dance music, there is nothing like accurate, powerful sub bass to infuse your listening with drama. Audiophiles—and anyone looking for comfortable, non-fatiguing, high-end headphones—can now get even more impact and emotion from the HD 660S2. The headphone’s warm, relaxed tone is reflected by their timeless styling with elegant bronze accents. With its open-back design and outstanding comfort, the HD 660S2 is also destined to be a favorite for long listening sessions. This version builds on all the strengths of its formidable predecessor. The same world-class precision and resolution still let you pick out individual instruments like with no other headphone. Or experience the joy of discovering sonic details in recordings you’ve known for years—now underscored with more and deeper low end. Indeed, the standard-setter for extended listening has now become the standard-setter for extended bass as well. Enhancing this heralded audio design without detracting from its many strengths was, however, a daunting task. So, our engineers set out to systematically identify and exploit every opportunity in their quest to improve on the acclaimed HD 660S design. We adjusted the compliance of the surround, for instance, dropping the resonance frequency to 70 Hz. Considerable effort went into optimizing the airflow around the transducer. The coil in the HD 660S2 has also been revised to match the legendary HD 600 & 650, resulting in an impedance of 300 ohms. The coil offers a high magnetic force and electrical damping for a clean impulse response. It also increases sensitivity over the entire frequency spectrum by using the magnet’s air gap more efficiently. Taken together, these efforts and more have paid off in spades. Sound pressure at the lowest octaves has doubled. Now, you can feel the music more than ever before—with all the depth and weight that ultra-low frequencies invoke. The lowest A on the piano (27.5 Hz) or the pounding root note of a bass drum (45-60 Hz) are just as big, expansive, and imposing as if they were live. The unique combination of impactful bass combined with the warm tuning and smooth treble will be a revelation for audiophile listeners. It’s an even better way to lose yourself in comfortable, non-fatiguing, high-end sound—while feeling its full low-end power.",
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Newegg raw specs
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