SKU: 20111700814

Sennheiser HD 660S2 Open Back Headphones

Sale price$179.55 Regular price$199.50
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

Sennheiser HD 660S2 Open Back HeadphonesSennheiser HD 660S2 Open Back Headphones The HD 660S2 is the newest version of Sennheiser's legendary "HD 600" series. They feature the same iconic design as their predecessors but with some noticeable sonic tweaks, in particular to enhance the lower bass frequencies with the 660S2s now dropping down to 70Hz. Musical Precision Like their predecessors, the HD 660S2 headphones are crafted for the discerning listener. Each speaker is hand selected and

Sennheiser HD 660S2 Open Back Headphones

The HD 660S2 is the newest version of Sennheiser's legendary "HD 600" series. They feature the same iconic design as their predecessors but with some noticeable sonic tweaks, in particular to enhance the lower bass frequencies with the 660S2’s now dropping down to 70Hz.

Musical Precision

Like their predecessors, the HD 660S2 headphones are crafted for the discerning listener. Each speaker is hand-selected and meticulously paired to ensure consistent sound quality across both channels. The precision-engineered stainless-steel diaphragms deliver an incredibly realistic, true-to-life audio experience.

Open-Back Design for Expansive Sound

With an open-back design, the HD 660S2 headphones provide a wide, more natural, airy sound, getting you as close to a live performance as possible.

Balanced Input Capability

Equipped with both balanced and unbalanced cables, the HD 660S2 optimizes the performance of high-quality headphone amplifiers and audio players with balanced outputs. Balanced cables reduce interference, preserving the purity of the sound. The standard cable features a 6.35mm plug, with a 3.5mm adapter included for convenience.

Built for Comfort

When audio quality is this exceptional, extended listening sessions are inevitable. The HD 660S2 ensures lasting comfort with its ergonomic, elliptical ear cups that naturally conform to your ears. The breathable, soft earpads enhance comfort without becoming sticky or uncomfortable during long use.

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: 20111700814

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4.2 ★★★★★
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MGSchnootz
Phoenix, US
★★★★★ 5
What a fun toy!!!
Color: Turtle
This is the first toy in a very long time my 10yo GSD wants to play with. She actually brings it over for me to turn on. It is loud and wiggly... She goes nuts for it! So far good quality with shaking and light chewing. Very easy to turn on and off. Great value for the play enjoyment of my sweet girl, gets her up and moving.
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Reviewed in the United States on May 21, 2026
D
Verified Purchase
Donna provenzano
Omaha, US
★★★★★ 5
Toy to keep pups busy
Color: Turtle
My puppy absolutely loves this toy. He runs after it all day and the sound isn’t that loud. The material is durable and he can not get to the rechargeable ball inside so it’s very safe . The material is thick enough for busy chewers and it’s so adorable . Great value for your money
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Reviewed in the United States on May 31, 2026
K
Verified Purchase
Kathy
Bozeman, US
★★★★★ 4
Great toy but does recharge
Color: Turtle
Great toy but only work for a few days even after I charged it. Can I get a replacement ?
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Reviewed in the United States on May 4, 2026
R
Verified Purchase
Rex granite
Port Orchard, US
★★★★★ 5
Dog Loves this toy!
Color: Crab
Keeps our poodle entertained and excited. The rechargeable battery lasts a long time. You can make it play crazy music or just shake. It’s hilarious to watch him play with it. It’s very chew resistant, and believe me, he tries his best to destroy it. If you have a high energy dog, they’re gonna love it.
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Reviewed in the United States on June 3, 2026
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Verified Purchase
BACGTG
Los Angeles, US
★★★★★ 5
Great toy for puppies!
Color: Turtle
I love this turtle. My toy poodle puppy has boundless energy. She loves this thing. It keeps her busy so I can get laundry and other things done. I am buying a second one for when the first one loses its charge😂
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Reviewed in the United States on May 30, 2026

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