---
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: "722612CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Sennheiser"
url: https://www.desertcart.sn/products/509545979-hd-660s2-audiophile-open-back-over-ear-headphones-wired-deep
store_origin: SN
region: Senegal
---

# 300Ω impedance for audiophile amps 42mm dynamic drivers Frequency range 8Hz-41.5kHz 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:** 722612CFA
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game — don’t just listen, live the music.

## 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?** 722612CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/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

- • **All-Day Comfort Design:** Breathable velour ear cushions and lightweight frame keep fatigue at bay during marathon sessions.
- • **Versatile Connectivity:** Includes detachable 6.3mm & 4.4mm cables plus adapters for seamless PC, gaming, and music use.
- • **Audiophile-Grade Build Quality:** Crafted in Germany & Ireland with premium materials for durability and elegance.
- • **Immersive Open-Back Soundstage:** Experience expansive, natural acoustics that place you inside the music.
- • **Deep, Controlled Bass Extension:** Feel every note from 8Hz lows to crisp highs with precision and power.

## Overview

The Sennheiser HD 660S2 are premium open-back over-ear headphones featuring 42mm dynamic drivers and a wide 8Hz to 41.5kHz frequency response. With a 300Ω impedance, they deliver audiophile-grade sound clarity and deep bass extension, ideal for music lovers, gamers, and professionals. Designed for comfort with breathable velour pads and crafted with high-quality materials, these wired headphones come with detachable cables and adapters for versatile use across devices.

## 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: Good sound. Comfortable fit well built - Very comfortable headphones. They fit completely over your ears without pressing against them so there's no pressure on your ears so you don't end up with the hot and a bit painful. As for the build quality, as you can imagine for that price, they're very well built. I've had them make before. I've heard it said that the base wasn't too good on them, but I found it more than adequate. They are very well made. Got a nice bright sound to them without sounding tinny the cable has a sturdy connection and a nice thickness. The whole set screams quality. More than happy with them. If you can afford them I'd give them the thumbs up
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.

## 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 | 2,500 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 33 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 | 4.3 out of 5 stars 650 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)

## Available Options

This product comes in different **Style** options.

## 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

### ⭐⭐⭐⭐⭐ Good sound. Comfortable fit well built
*by M***E on 29 June 2026*

Very comfortable headphones. They fit completely over your ears without pressing against them so there's no pressure on your ears so you don't end up with the hot and a bit painful. As for the build quality, as you can imagine for that price, they're very well built. I've had them make before. I've heard it said that the base wasn't too good on them, but I found it more than adequate. They are very well made. Got a nice bright sound to them without sounding tinny the cable has a sturdy connection and a nice thickness. The whole set screams quality. More than happy with them. If you can afford them I'd give them the thumbs up

### ⭐⭐⭐⭐⭐ 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.

## 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 Senegal*
*Store origin: SN*
*Last updated: 2026-07-19*