---
product_id: 509545979
title: "HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black"
brand: "sennheiser"
price: "3629.90 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Sennheiser"
url: https://www.desertcart.tn/products/509545979-hd-660s2-audiophile-open-back-over-ear-headphones-wired-deep
store_origin: TN
region: Tunisia
---

# 42mm transducers for rich sound 27.5 Hz deep bass extension Premium aluminum build HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black

**Brand:** sennheiser
**Price:** 3629.90 DT
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game — because your ears deserve the VIP treatment.

## Quick Answers

- **What is this?** HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black by sennheiser
- **How much does it cost?** 3629.90 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/509545979-hd-660s2-audiophile-open-back-over-ear-headphones-wired-deep)

## Best For

- sennheiser enthusiasts

## Why This Product

- Trusted sennheiser brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Elegance:** Crafted with premium aluminum in Germany & Ireland for a sleek, long-lasting professional look.
- • **Open-Back Comfort:** Breathable, plush ear cushions designed for fatigue-free, marathon listening or gaming sessions.
- • **Plug & Play Versatility:** Wired with detachable cables and 3.5mm jack compatibility for seamless use across your devices.
- • **Powerful Low-End Impact:** Feel every note from piano lows to bass drums with crystal-clear precision and control.
- • **Audiophile-Grade Clarity:** Experience ultra-precise highs and deep, textured bass that reveals every musical detail.

## Overview

The Sennheiser HD 660S2 are premium open-back over-ear headphones featuring 42mm transducers and an ultra-light aluminum voice coil that deliver natural, high-fidelity sound with deep bass extension down to 27.5 Hz. Designed for audiophiles, gamers, and professionals, they combine breathable plush cushions for all-day comfort with a durable, elegant build crafted in Europe. Wired connectivity with detachable cables ensures compatibility with a wide range of devices, making these headphones a timeless choice for immersive listening experiences.

## Description

From the manufacturer Dive deeper into legendary sound. Enjoy your music on a completely new level. An intimate, relaxed sound signature combines with outstanding precision and exceptional comfort — and now, extended sub bass — for a deeply moving experience. Get an intimate experience you won’t want to live without. Ever felt goosebumps from sound so real, it was as if the source was in the room with you?The HD 660S2 allows music lovers to connect more deeply with their songs and artists. Breathtaking resolution and precision take you closer to instruments and vocalists, yet the sound is natural and balanced Double the sub bass heightens your listening experience. In doubling the sound pressure at the lowest frequencies, we’ve retained outstanding precision and balance throughout the sub-, mid-bass, and beyond. Extension on the low end alters everything — gives more space for the sound. Against a deeper stage, highs feel more brilliant and emotions stronger. A listening experience that’s physically pleasing. The velour earpads are a tactile pleasure. With the right amount of tension for proper acoustic positioning and supple padding, the headband won’t draw attention away from your music. As an open-back design, the HD 660S2 gives your ears an extremely comfortable climate, even for super-long sessions. High-end Sennheiser headphones have inspired generations. The benchmark for neutral audiophile sound, the HD 600 Series share visible and audible DNA with the HD 660S2. The revised coil of the S2 matches the 300-ohm impedance of the legendary HD 600/650. This new coil provides higher magnetic force and electrical dampening for cleaner impulse response. Find your headphones HD 660S2 Frequency Response 8 Hz - 41,500 Hz Impedance 300 Ohms SPL 104dB (1 V) THD <0.04% (1kHz,100dB) Connection Plug 6.3mm & 4.4mm Cables 2 Cables (1.8m) Weight 260g Learn More HD 660S2 Frequency Response 8 Hz - 41,500 Hz Impedance 300 Ohms SPL 104dB (1 V) THD <0.04% (1kHz,100dB) Connection Plug 6.3mm & 4.4mm Cables 2 Cables (1.8m) Weight 260g HD 660S Frequency Response 10 – 41,000 Hz Impedance 150 Ohms SPL 104dB (1 kHz/1Vrms) THD <0.04% (1kHz,100dB) Connection Plug 6.3mm & 4.4mm Cables 2 Cables (3m) Weight 260g Learn More HD 660S 10 – 41,000 Hz 150 Ohms 104dB (1 kHz/1Vrms) 2 Cables (3m) HD 599 Frequency Response 12 – 38,500 Hz Impedance 50 Ohms SPL 106dB (1kHz/1Vrms) THD <0.1% (1kHz, 100dB Connection Plug 6.3mm & 3.5mm Cables 2 Cables (3m & 1.2m) Weight 250g Learn More HD 599 12 – 38,500 Hz 50 Ohms 106dB (1kHz/1Vrms) <0.1% (1kHz, 100dB 6.3mm & 3.5mm 2 Cables (3m & 1.2m) 250g HD 599 Special Edition Frequency Response 12 – 38,500 Hz Impedance 50 Ohms SPL 106dB (1kHz/1Vrms) THD <0.1% (1kHz, 100dB) Connection Plug 6.3mm & 3.5mm Cables 2 Cables (3m & 1.2m) Weight 250g Learn More HD 599 Special Edition <0.1% (1kHz, 100dB) HD 560S Frequency Response 6 – 38,000 Hz Impedance 120 Ohm SPL 110dB (1kHz / 1Vrms) THD <0.05% (1kHz, 90dB) Connection Plug 3.5mm Cables 1 Cable (1.8m) Weight 240g Learn More HD 560S 6 – 38,000 Hz 120 Ohm 110dB (1kHz / 1Vrms) <0.05% (1kHz, 90dB) 3.5mm 1 Cable (1.8m) 240g

Review: True audiophile open-back sound (but you’ll need a proper amp) - Review (★★★★★): Bought for £399.00 on desertcart UK (price at the time of writing). The HD 660S2 delivers a genuinely “audiophile” presentation: wide, natural soundstage, excellent vocal clarity and detail, plus noticeably deeper/cleaner sub-bass than many open-backs in this class. They’re also extremely comfortable for long sessions — light on the head, breathable velour pads, and no “hot ears” feeling. Pros: • Spacious, natural open-back sound with great detail and imaging • Stronger low-end/sub-bass presence without muddying the mids • Very comfortable for hours (lightweight, breathable pads) • Quality build and detachable cables/adapters included Cons: • Open-back = no isolation (sound leaks both ways) • 300Ω — needs a decent DAC/amp to sound its best • Premium price If you listen alone and want a reference-leaning, enjoyable open-back headphone for music and gaming, this is a superb choice.
Review: My new favourite pair - So glad I bought these, they were a treat and wondered if I should spend the money. Worth the price and value for money. The fit is very comfortable, does have not excessive clamp and light weight. I forget I have them on sometimes and even that they have a cable. Sound wise they sound pretty neutral to me, but I’m not an expert. You can hear more detail in the mix and instruments. Sound stage is not impressive but not bad either. I have a pair of Sony WH-1000XM4s and although they are fairly easy to listen to they are far to bassy the point of being harsh and sound muddy, if you have been listening to these. Better frequency-wise, and more comfortable than a pair of oldish Grado SR225s. Yes they are open, yes there are other more practical headphones with noise cancelling and wireless features, and apps etc. But these are old school, no fuss and make you appreciate the music again.. easy to understand why they are fan favourites. Always surprised when I put them on. Only gripe is that the cable catches my nose and mouth when taking them off in a hurry. Theyre a bit underpowered on my iPhone, so you’ll need a dac or amp of some sorts. Works perfectly well on my MacBook Pro without extra amplification. Decent build quality, but sadly no decent case for your money.

## Features

- Audiophile-Grade Open-Back Sound: These Sennheiser over-ear headphones provide a natural, high-fidelity sound with a spacious soundstage, great for immersive music experiences and long listening sessions
- Precise Highs & Deep Sub-Bass: Sennheiser wired headphones over ear with ultra-light aluminum voice coil and 42mm transducers deliver detailed highs, rich mids, and deep, controlled bass. Over-ear fit headphone, great for gamers, professionals, podcasters
- Powerful Low-End Performance: These wired over ear headphones let you feel every note from piano lows (27.5 Hz) to bass drums (45-60 Hz) with clarity & precision, whether it is gaming headphones for gaming sessions, listening to music, or for desktop use
- Comfort: Open-back design with breathable, plush ear cushions ensures fatigue-free listening during long sessions, making the Sennheiser wired and comfortable open-back over-ear headphones that can work for music listeners or as gaming headsets
- Premium Build Quality: Sennheiser audiophile over the ear headphones are crafted with high-quality materials in Germany & Ireland for durability, elegance, & long-lasting performance for music lovers, travelers, and professionals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BT7XXYTB |
| Age Range Description | Adult |
| Antenna Location | music |
| Audio Driver Size | 42 Millimetres |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | 1,503 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 23 in Studio Headphones |
| Box Contents | 4.4 mm cable (1.8 m), 6.3 mm cable (1.8 m), 6.3mm to 3.5mm adapter, HD 660S2 headphones, Protective Case |
| Brand | Sennheiser |
| Brand Name | Sennheiser |
| Cable Features | Detachable |
| Carrying Case Color | Black |
| Carrying Case Material | Breathable fabric or soft material |
| Colour | Black |
| Compatible Devices | Devices with 6.35 mm audio input or adapter compatibility |
| Control Method | Touch |
| Control Type | Touch Control |
| Country of Origin | Ireland |
| Customer Package Type | FFP |
| Customer Reviews | 4.4 out of 5 stars 623 Reviews |
| Ear placement | Open Ear |
| Earpiece Shape | Over-ear cups |
| Enclosure Material | Aluminium |
| Form factor | Over Ear |
| Frequency Range | 8 Hz - 41,500 Hz |
| Frequency Response | 41500 Hz |
| Global Trade Identification Number | 00810091270370, 04260752330374 |
| Headphone Form Factor | Over Ear |
| Headphone Jack | 6.35 mm Jack |
| Headphones Ear Placement | Open Ear |
| Impedance | 300 Ohms |
| Is Autographed | No |
| Item Type Name | Over Ear Wired Headphone |
| Item Weight | 260 Grams |
| Manufacturer | Sennheiser |
| Model Name | HD 660S2 |
| Model Number | 700240 |
| Network Connectivity Technology | Wired |
| Noise Control | None |
| Noise control | None |
| Number of Items | 1 |
| Product Features | Fast Charging |
| Sensitivity | 104 dB |
| Series Number | 660 |
| Specific Uses For Product | Music |
| Style Name | HD 660S2 |
| Theme | Music |
| UPC | 810091270370 |
| Unit Count | 1.0 count |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology Type | Kopfhörer mit Kabel |

## Product Details

- **Brand:** Sennheiser
- **Colour:** Black
- **Ear placement:** Open Ear
- **Form factor:** Over Ear
- **Frequency response:** 41500 Hz
- **Headphone jack:** 6.35 mm Jack
- **Impedance:** 300 Ohms
- **Model name:** HD 660S2
- **Noise control:** None
- **Sensitivity:** 104 dB

## Images

![HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black - Image 1](https://m.media-amazon.com/images/I/81EVN1kWYjL.jpg)
![HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black - Image 2](https://m.media-amazon.com/images/I/815noQJi02L.jpg)
![HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black - Image 3](https://m.media-amazon.com/images/I/91Z8gdQtbSL.jpg)
![HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black - Image 4](https://m.media-amazon.com/images/I/81WUumRlx3L.jpg)
![HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black - Image 5](https://m.media-amazon.com/images/I/91ZW7K6DQuL.jpg)

## Questions & Answers

**Q: That 300 ohm impedence frightens me. i have ak sr25 mk2 music player i assume ok but i want to listen to movies from hifi amplifier, are both ok?**
A: I’m not sure ….. I listen through a modestly-priced iFi dac & headphone amp and they don’t struggle at all for power 👍🙂

**Q: Fast charging ? As per spec.**
A: These headphones don't have batteries, so there's no fast charging (or any other kind of charging).

## Customer Reviews

### ⭐⭐⭐⭐⭐ True audiophile open-back sound (but you’ll need a proper amp)
*by V***D on 3 March 2026*

Review (★★★★★): Bought for £399.00 on Amazon UK (price at the time of writing). The HD 660S2 delivers a genuinely “audiophile” presentation: wide, natural soundstage, excellent vocal clarity and detail, plus noticeably deeper/cleaner sub-bass than many open-backs in this class. They’re also extremely comfortable for long sessions — light on the head, breathable velour pads, and no “hot ears” feeling. Pros: • Spacious, natural open-back sound with great detail and imaging • Stronger low-end/sub-bass presence without muddying the mids • Very comfortable for hours (lightweight, breathable pads) • Quality build and detachable cables/adapters included Cons: • Open-back = no isolation (sound leaks both ways) • 300Ω — needs a decent DAC/amp to sound its best • Premium price If you listen alone and want a reference-leaning, enjoyable open-back headphone for music and gaming, this is a superb choice.

### ⭐⭐⭐⭐⭐ My new favourite pair
*by L***E on 31 July 2024*

So glad I bought these, they were a treat and wondered if I should spend the money. Worth the price and value for money. The fit is very comfortable, does have not excessive clamp and light weight. I forget I have them on sometimes and even that they have a cable. Sound wise they sound pretty neutral to me, but I’m not an expert. You can hear more detail in the mix and instruments. Sound stage is not impressive but not bad either. I have a pair of Sony WH-1000XM4s and although they are fairly easy to listen to they are far to bassy the point of being harsh and sound muddy, if you have been listening to these. Better frequency-wise, and more comfortable than a pair of oldish Grado SR225s. Yes they are open, yes there are other more practical headphones with noise cancelling and wireless features, and apps etc. But these are old school, no fuss and make you appreciate the music again.. easy to understand why they are fan favourites. Always surprised when I put them on. Only gripe is that the cable catches my nose and mouth when taking them off in a hurry. Theyre a bit underpowered on my iPhone, so you’ll need a dac or amp of some sorts. Works perfectly well on my MacBook Pro without extra amplification. Decent build quality, but sadly no decent case for your money.

### ⭐⭐⭐⭐⭐ Best headphones I've ever had
*by L***E on 26 October 2023*

Warning.... Don't judge them on first listen Run them in for a good 10-20 before Bucks Fizz Eurovision Winner Oooops, silly me, I mean, before making your mind up Initially they sound nice, but not 500 pound nice depending on what you pay for them Do not pay more than £500 though as with Amazon the price varies I got them for 464 but then the price dropped to 419.... I asked Amazon to refund the difference They wouldn't, but I could return them and reorder for the price I went to re order and suddenly the price was £500 Such shady dealings with Amazon, really shady Anyway....to the headphones After running in, they really are lovely sounding\ Not overloaded with Bass like a lot of these Beats headphones, which are completely overpriced because of the name The Bass is true, as in you actually hear the texture of a bass line rather than just some bass "noise" Instrument separation is very, very good The top end is what I would describe as smooth rather than overly detailed I mean, I getting on a bit, despite being 8-12 years old in the mind I'm actually middle aged..... what's middle aged you say? I dunno these daze I'd say 39-55 So as of the time of writing I'm somewhere in between that My hearing.. I can barely hear a 14khz tone now, so bear bare (how do you spell that?) in mind But it's probably better than most chaps my age, because once you past 30, the fact is you really do start to lose the top end of your hearing whether you like it or not Right, to the top end They tail off quicker than my Monito Audio Gold speakers But sound a tad smoother So ultimate detail might not be there if your ears need a bit of extra treble But they fit nice and are very comfy for long sessions, of listening that is 😊 You really have to wear them in a reasonably silent room though, as being open backed you will hear outside noises So if you're thinking of having these on whilst sitting next to the wife/husband/man friend/girlfriend/thing friend/in between friend I'd advise against getting them as they really do leak sound rather loudly I've had them a few months now, so I velvet, oops, I mean felt I could write a reasonable review Although reasonable I'm usually not Goodbye for now PS Also it asked me to give a star rating on "Sheerness" Seriously WTF is that all about I mean, is that a joke or you really want me to judge a headphone in relation to a place in Kent? Just nonsense, and I know nonsense when I see it

## Frequently Bought Together

- Sennheiser HD 660S2 Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black
- FIIO K11 Desktop 1400W Power Balanced Headphone DAC & Amplifier 384kHz/24Bit DSD256 for Home Audio/PC 6.35mm/4.4mm/RCA/Coaxial/Optical (Black)
- NewFantasia 4.4mm Balanced Male 6N OCC Copper Silver Plated Cord 4.4mm Balanced Cable Compatible with Sennheiser HD650, HD600, HD580, HD660S, HD58X, Massdrop HD6XX Headphone Walnut Wood Shell

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-05-26*