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 Aug 14 - Aug 19

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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
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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]
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SKU: 10254483344

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4.5 ★★★★★
Based on 20 reviews
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Product Reviews
D
Verified Purchase
Donna A.
Chelsea, US
★★★★★ 5
Brody loves the Owl ball
Color: Brown, Color: Brown
My dog loves this ball! He destroys every toy! He loves balls but he destroys all of them. He loves Owl ball! It’s challenging for him to pick up & loves the sound. Best toy he has! Keeps him entertained & he can’t destroy it!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
T
Verified Purchase
Tarheel1979
Lowell, US
★★★★★ 5
Great toy
Color: Red
Indestructible by my Boxers
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
M
Verified Purchase
Mike Salas
Alexandria, US
★★★★★ 2
Not for aggressive chewers
States it's for aggressive chewers, lasted 48 hours. She did enjoy it, but it was short lived.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026
D
Verified Purchase
Derrick
Chelsea, US
★★★★★ 5
Indestructible ball….Destroyed my dog’s goals
Color: Brown
I have a golden retriever that would rather watch the world burn with every toy I’ve ever gotten him than play nice with any of them. He burns through toys faster than a cardboard bonfire. However, the trap was set…I bought this as a last ditch effort to show that four legged champion of destruction that he could be bested… I remember it to this day.. It was a Tuesday - raining The ball came in the mail and as I nervously unwrapped and opened it, it was as if he knew a new challenger stepped in the ring as he came barreling towards the front door where I stood. Not today I told myself as I stood with confidence with this ball of justice in front of me. The usual sit and stay kept him at bay until I tossed it to him in which he had turned into a frantic honey badger shaking the ball and chewing ferociously he wanted the squeaking thing inside that doesn’t squeak but sounds like an ugly cry. However, it is next Tuesday and the ball stands victorious My dog has been bested and now understands the chain of command. He respects the ball but will always come back for more until he feels that he has won All in all absolutely buy this for aggressive chews and toy playing dogs.
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Reviewed in the United States on March 26, 2024
T
Verified Purchase
Tangodown
Chelsea, US
★★★★★ 5
Broke the first day
I purchased the owl ball because of other dog chew toys I purchased from Amazon. Those other chew toys are still holding together. The main reason I got the owl ball is due to the different noises it makes other than the regular squeak noise. After giving the toy to my dog he loved it right away. He especially liked the noise it made. After a few hours, I noticed he was chewing a white tube-like device. I took this away from him and determined it was the noise maker in the owl ball. I examined the owl ball and noticed the glue used to keep the ball cap shut did not hold. On closer inspection, I noticed what looked like rubber cement was used to hold the cap on but if it was rubber cement it was used improperly. Anyway, I just reglued the cap correctly and now it's just a ball because my dog destroyed the noise maker. OK, Since I posted this review I was contacted by the seller. They offered to give me a full refund for the owl ball. I accepted the offer. So, I will try it again, but buy a different color owl this time. I never expected a refund since it's just a ball now, my dog still plays with it and it is holding up very well. The material it is made from is pretty sturdy.
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Reviewed in the United States on September 4, 2024

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