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Sennheiser HD 660S2 Wired Over-Ear Audiophile Open-Back Headphones - Black - Picture 1 of 14
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Sennheiser HD 660S2 Wired Over-Ear Audiophile Open-Back Headphones - Black

Lada Acquisitions LLC
(6597)
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US $325.00
ApproximatelyAU $499.46
Condition:
Used
“Pre-owned / very good condition / tested, works / all items in the pictures are included”
Out of stock6 sold
Postage:
Free Standard Shipping.
Located in: Edgewater, Florida, United States
Delivery:
Estimated between Tue, 19 Aug and Sat, 23 Aug to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the postage service selected, the seller's postage history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30-day returns. Seller pays for return postage.
Payments:
     Diners Club

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Seller assumes all responsibility for this listing.
eBay item number:167164238021
Last updated on 09 Aug, 2025 01:33:53 AESTView all revisionsView all revisions

Item specifics

Condition
Used
An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitionsopens in a new window or tab
Seller notes
“Pre-owned / very good condition / tested, works / all items in the pictures are included”
Brand
Sennheiser
Form Factor
Headband
Type
Ear-Cup (Over the Ear)
Number of Earpieces
Double
Color
Black
Model
Sennheiser HD 660S2
Connectivity
3.5mm Jack, 6.35 mm (1/4 in)
Microphone Type
None
Features
Extra Bass
MPN
508826
Suitable For
Live Monitoring, Studio Monitoring
UPC
810091270370

Item description from the seller

About this seller

Lada Acquisitions LLC

99.4% positive Feedback•36K items sold

Joined Nov 2018
Welcome to our store. We sell used, open box and some new consumer electronics. We make sure all of our products are tested and working before listing the item. We do a second inspection and check ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable postage costs
5.0
Postage speed
5.0
Communication
5.0

Seller feedback (6,671)

All ratings
Positive
Neutral
Negative
  • s***l (450)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Excellent communication with seller. Item was perfectly packaged and arrived in seemingly good condition. Many emails regarding certain issues were responded to quickly and in good faith. I highly recommend this seller but the unit was defective. We need to remember that electronics are sensitive items and don't always work due to too many reasons to list. The seller has been very supportive and I am very pleased with the way they dealt with the problems I faced.
    Insignia NS-B4111 CD / CD-RW Playback/ AM FM Radio / CD-R Playback Boombox (#167575707994)
  • 4***i (255)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    El equipo llego segun lo informado, en perfectas condiciones y en su empaque original. El vendedor informo que lo probo primero antes de enviar y asi fue, todo estaba funcionando en perfectas condiciones. Gracias vendedor por vender un equipo eléctriconico excelente y al mejor precio. Gracias, 👍 vuelvo a conprarle a usted equipos electrónicos por que cumplió con su palabra. gracias!!
    Insignia NS-HAWHP2 RF Wireless Over the Ear Headphones - Black (#166318175073)
  • 0***- (851)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    ⭐️⭐️⭐️⭐️⭐️ Excellent Seller – Highly recommend and trustworthy seller. Item as described. Good communication. Reasonably priced. Very well packaged and fast delivery. Thank you 😊
    Jbl Wireless Bluetooth Earbuds & Cases Lot - Not Working For Parts (#167232006822)
See all feedback

Product ratings and reviews

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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

See all 8 reviews
  • by kelbertxela
    04 Jun, 2024

    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

  • by dstapp-2012
    18 Nov, 2023

    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

  • by abermudez55
    14 May, 2025

    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

  • by uptownrecords2004
    15 Jan, 2025

    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

  • by liushev_62
    05 Jun, 2025

    Great item. Works great, especially with...

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

    Verified purchase: YesCondition: Pre-ownedSold by: dalen3257

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