Sennheiser HD 660S2 Open-back Headphones

US $429.95
as low as $38.60/mo with
Condition:
New
More than 10 available3 sold

Additional service available

People want this. 18 people are watching this.
Breathe easy. Returns accepted.
Shipping:
Free Standard Shipping.
Located in: Fort Wayne, Indiana, United States
Delivery:
Estimated between Wed, Nov 26 and Mon, Dec 1 to 94104
Estimated delivery dates - opens in a new window or tab include seller's handling time, origin ZIP Code, destination ZIP Code and time of acceptance and will depend on shipping service selected and receipt of cleared paymentcleared payment - opens in a new window or tab. Delivery times may vary, especially during peak periods.
Returns:
30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
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eBay item number:266995617965
Last updated on Nov 22, 2025 04:40:46 PSTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Brand
Sennheiser
Model
700240
Connectivity
Not Available
Type
Not Available
Color
Black
MPN
700240
UPC
810091270370
Category

Item description from the seller

About this seller

Sweetwater Sound

99.7% positive feedback1.2M items sold

Joined Aug 2001
Shopping for guitars, amps, effects, keyboards, microphones, PA gear, or recording equipment? Sweetwater Sound has it all, at great prices! As the world's leading music instruments and pro audio ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (487,126)

All ratingsselected
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  • e***r (780)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Very well packed to safeguard in shipping, very quick shipping from Fort Wayne, IN, United States to Ontario, Canada, delays with shipping are to be expected however this was fast until it got stopped by Canada-Post Strike. Finally arrived. The On-Stage Stands RS7030 Table Top Rack Stand is exactly as pictured and described. Very high quality and very good condition, vendor very easy and very professional to deal with. Excellent value. Very professional transaction. Definitely worth wait.
  • 5***5 (2788)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    The guitar arrived in perfect condition and it was packed excellent. I bought it for my granddaughter but on the day I gave it to her, she asked if she could play an electric guitar instead. This company didn't give me an issue about returning it. They were so kind and asked no questions. The refund went without a problem at all! My money was refunded quite quickly. My experience with them was 2 thumbs up. I'd buy from them again.
  • o***s (661)- Feedback left by buyer.
    Past month
    Verified purchase
    Vorbildlicher Verkäufer!!! Das erste von vier bestellten Bongo Haeds von Remo ist angekommen. Die Verpackung, Lieferzeit(USA) und die Kommunikation waren exzellent und wurden mit einer detaillierten Informationen zum Sendeverlauf gekrönt. Wie gesagt, vorbildlich!!! Vielen Dank und sehr gerne schaue ich wieder vorbei!!!
See all feedback

Product ratings and reviews

4.9
8 product ratings
  • 7 users rated this 5 out of 5 stars
  • 1 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Good sound quality

Comfortable

Lightweight

Most relevant reviews

  • one of the most excellent open backs ever made, gets a bit of Sub-bass extension at the cost of a dip in the 3-4kHz range for a wider soundstage with

    one of the most excellent open backs ever made, gets a bit of Sub-bass extension at the cost of a dip in the 3-4kHz range for a wider soundstage with a hint of placebo effect. Overall, its really hard to improve an already 20+ year design, nonetheless Senheisser spent the time and continues to innovate even if its laterally rather than forward.

    Verified purchase: YesCondition: Pre-OwnedSold by: bugsy_72

  • The best of the 600 series

    I have the 600, 650 and the 660s. The 660s2 has the most complete balanced audio. It fits well. I use for all types of music. The 660s2 is an excellent headphone for audiophile sound. You don’t need another headphone.

    Verified purchase: YesCondition: Pre-OwnedSold by: vikingc-85

  • the best headphones

    My previous model was theHD 600 headphones that lasted more than 20 years since 1995. the sound to these ones is great!!.

    Verified purchase: YesCondition: Pre-OwnedSold by: giveliquidationllc

  • Winner Winner

    The sound of these is the best I've heard from Sennheiser in quite some time. These are really nice. The headband is part metal so you can bend it how you like to make these super comfy. Fantastic sound!!

    Verified purchase: YesCondition: NewSold by: ejuky

  • Great item. Works great, especially with...

    Great item. Works great, especially with Topping Desktop DAC & Headphone Amplifier

    Verified purchase: YesCondition: Pre-OwnedSold by: dalen3257