SKU: 10254483344

Sennheiser HD 660S2 Audiophile Headphone

Sale price$427.48 Regular price$474.98
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

Sennheiser HD 660S2 Audiophile HeadphoneSennheiser HD 660S2 Audiophile Headphone As far back as the HD 580, high end Sennheiser headphones have inspired generations with their balanced, natural reproduction. Recognized as benchmarks for neutral audiophile sound, the HD 600, HD 650, and HD 660S all share visible and audible DNA with the HD 660S2. The revised coil of the S2, for instance, now matches the 300 ohm impedance of the legendary HD 600 & HD 650. This new coil also provides higher

Sennheiser HD 660S2 Audiophile Headphone

As far back as the HD 580, high-end Sennheiser headphones have inspired generations with their balanced, natural reproduction. Recognized as benchmarks for neutral audiophile sound, the HD 600, HD 650, and HD 660S all share visible and audible DNA with the HD 660S2. The revised coil of the S2, for instance, now matches the 300-ohm impedance of the legendary HD 600 & HD 650. This new coil also provides higher magnetic force and electrical dampening for cleaner impulse response.
The surround is now more compliant, too, dropping the resonant frequency to 70 Hz. Considerable effort also went into optimizing the airflow around the transducer. There’s more sensitivity over the entire frequency spectrum because the magnet´s air gap works more efficiently now. Taken together, these measures result in even greater precision, speed, and resolution — with double the sound pressure at the lowest frequencies.

Features

  • Uniquely powerful vented magnet system for minimized distortion
  • Ultra-light aluminium voice coil with 300-ohm impedance for excellent impulse response
  • Intimate sound with great timbre and deep, accurate sub bass
  • Plush ear cushions and open design for maximum comfort
  • Outstanding quality designed in Germany, made in Ireland

Specifications

Transducer principle dynamic, open
Transducer size 38 mm
Frequency response 8 – 41,500 Hz
Impedance 300 Ω
Sound pressure level (SPL) 104 dB (1 kHz, 1 Vrms)
Total harmonic distortion (THD) <0.04% (1 kHz, 100 dB)
Ear coupling Over-Ear
Weight 260g
Adapter 6.3 mm (1⁄4inch) to 3.5 mm
Connector 6.3 mm (1⁄4inch) jack plug, 4.4 mm balanced plug
Cable length 1.8m

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 10254483344

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Heidi
Los Angeles, US
★★★★★ 5
Excellent
Color: 3PC-Bacon-Brown, Pattern Name: Tough Dog Toys
Truly are fantastic! Dogs love these and they last forever
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Reviewed in the United States on May 23, 2026
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Tira
Natrona Heights, US
★★★★★ 5
Dog is Happy!
Color: 3PC-Peanut Butter-Green, Pattern Name: Tough Dog Toys
My dog likes the bones, especially because they are peanut butter-flavored. The bones are very strong and well-made, so they are good for heavy chewers. By the way, these bones are very large for big dogs only!
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Reviewed in the United States on May 15, 2026
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Randy H.
Boise, US
★★★★★ 5
They last for months
Color: 3PC-Bacon-Brown, Pattern Name: Tough Dog Toys
This is my second order of this product. I have 2 medium size dogs and they love them. The nice thing is a 3 pack of these is that they will last them for a few months.
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Reviewed in the United States on June 9, 2026
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Kirsten Kramer
Lexington, US
★★★★★ 4
Bones
Color: 3PC-Bacon-Brown, Pattern Name: Tough Dog Toys
Great product but my dogs don't seem to be interested
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Reviewed in the United States on May 2, 2026
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CMT
Waukegan, US
★★★★★ 5
Indestructible
Color: 3PC-Bacon-Brown, Pattern Name: Tough Dog Toys
Finally found a chew bone strong enough for our pit mix, would highly recommend for an agressive chewer! Will buy again
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Reviewed in the United States on June 12, 2026

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