---
product_id: 651051166
title: "HD 660S2 Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black"
brand: "sennheiser"
price: "€ 1003.87"
currency: EUR
in_stock: true
reviews_count: 5
category: "Sennheiser"
url: https://www.desertcart.hr/products/651051166-hd-660s2-wired-audiophile-stereo-headphones-with-deep-sub-bass
store_origin: HR
region: Croatia
---

# Airflow-optimized vented magnet system 300Ω impedance for precise sound Double sound pressure at lowest octaves HD 660S2 Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black

**Brand:** sennheiser
**Price:** € 1003.87
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your audio game — hear what others miss, feel what others don’t.

## Quick Answers

- **What is this?** HD 660S2 Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black by sennheiser
- **How much does it cost?** € 1003.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/651051166-hd-660s2-wired-audiophile-stereo-headphones-with-deep-sub-bass)

## 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

- • **Feel Every Beat:** Double the sound pressure at sub-bass frequencies (27.5 Hz - 60 Hz) for immersive, heart-pounding lows.
- • **Breathe Easy Listening:** Open-back design with airflow-optimized 42mm transducers ensures minimal distortion and all-day comfort.
- • **Tailored for Professionals:** Detachable cables and 6.35mm jack compatibility for seamless integration with your premium audio setup.
- • **Studio-Grade Sound Precision:** Experience ultra-high fidelity with a 300-ohm aluminum voice coil delivering intimate, natural timbre.
- • **Crafted with German Engineering:** Premium build quality made in Ireland, combining durability with elegant bronze accents for timeless style.

## Overview

The Sennheiser HD 660S2 wired headphones deliver studio-quality sound with a 300-ohm impedance aluminum voice coil and airflow-optimized 42mm transducers. Designed for audiophiles and professionals, they offer deep, precise sub-bass, minimal distortion, and exceptional comfort with an open-back design. Made in Ireland with German engineering, these headphones come with detachable cables and support a wide frequency range (8 Hz - 41,500 Hz), perfect for immersive, long listening sessions.

## Description

From thundering timpani, to the melodic sound of a guitar, the impressive singing voice of your favorite artist, or the beat of electronic dance music, nothing creates drama like powerful bass. Ideal for music lovers, the non-fatiguing, high-end HD 660S2 now delivers even more impact and emotion. Our engineers optimized the HD 660S's surround, transducer airflow, and coil to double the sound pressure at the lowest octaves. You can feel the lowest note on the piano (27.5 Hz) or the kick of the bass drum (45-60 Hz) as if you were there at the recording studio, allowing you to pick out individual instruments and discover new sonic details.The relaxed sound and open-black design make it an extremely comfortable headphone that is also suitable for long listening sessions. The headphone's warm, relaxed sound is reflected in its timeless design and elegant bronze accents. With warm tuning, smooth treble and strong bass, the standard-setter for extended listening is now also the standard for extended bass.

Review: J’en ai eu des casques, de toutes marques, de toutes technologies, mais je penses avoir enfin trouvé le Graal ! Alors attention, mon avis est bien évidemment subjectif et dépend entièrement de ma configuration matériel ! Utilisé principalement sur mon ampli (Yamaha A-S1100) pour l’écoute de vinyles (Pro-ject PRO avec cellule 2M Black et preamp à lampes). J’avais craqué jusqu’à présent sur un Grado SR325X qui est vraiment excellent mais pas des plus confortables, le HD660S2 me faisait de l’œil depuis longtemps.. malgré certains commentaires qui laissent entendre un manque de basses, c’était justement l’un de mes objectifs, car depuis l’acquisition du preamp à lampes ces dernières étaient devenues un peu trop “brouillonnes” et je cherchais à les maîtriser au delà de ce que le Grado permet. Et la.. le mariage parfait !! Le Sennheiser m’apporte un équilibre vraiment parfait (encore une fois d’après mon matériel). J’obtiens des basses suffisent puissantes et d’une précisions folle ! Les médium sont également légèrement relevés ce qui lève un certain “voile” présent sur les voix et les aiguës sont cristallins ! Peut-être un peu trop présent au déballage mais au bout de quelques heures de lecture, ceux-ci s’apaisent pour devenir juste excellent ! Je suis vraiment ravi de mon achat !
Review: These headphones are worth every cent. Audio quality coming from them is incredible provided that you couple them with a quality audio source. Keep in mind that these headphones are quite demanding, so to get sufficient volume you need adequate source. The sound is somewhere between neutral and warm, at least to my ears. I use them with FIIO M23. At medium gain, the player drives HD 660S2 perfectly and the sound is as close to analog as possible. With HiBy R6 III they sounded great as well. The only downside (but that is a general downside of open headphones, not of this in particular) is that in a noisy environment you hear noise as well. However, if your environment is quiet, these headphones will give you unmeasurable pleasure. Even though they are not small, they are quite light and very comfortable to use all day along. Build quality is very good and solid and again underlines the premium brand. The headphones come both with 3.5mm and 4mm cables, which is very useful depending on what player/DAC/source you use.

## Features

- Natural, relaxed, high-fidelity sound with extra sub bass: Ultra-light aluminum voice coil with 300-ohm impedance for excellent impulse response and an intimate sound with great timbre
- Airflow-optimised 42mm high-performance transducers: Improved ventilation due to a uniquely powerful vented magnet system for minimal distortion and air displacement control through steel mesh damping
- Double the sound pressure at the lowest octaves: You can feel the lowest note on the piano (27.5 Hz) or the kick of the bass drum (45-60 Hz) as if you were there, at the recording studio
- Exceptional comfort and build quality: The open-back design offers exceptional breathability and the plush ear cushions deliver maximum comfort - for long listening sessions
- Outstanding quality designed in Germany, made in Ireland: With a frequency response of 8 Hz - 41,500 Hz and detachable, long cables for comfortable desktop use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BT7XXYTB |
| Age range (description) | Adult |
| Cable feature | Detachable |
| Compatible devices | Devices with 6.35 mm audio input or adapter compatibility |
| Connectivity technology | Wired |
| Control method | Touch |
| Control type | Touch Control |
| Country of origin | Ireland |
| Frequency response | 41500 Hz |
| Headphone jack | 6.35 mm Jack |
| Included components | 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, Safety Guide, User Manual |
| Item model number | 700240 |
| Item weight | 260 Grams |
| Manufacturer | Sennheiser |
| Material | Aluminum |
| Model name | HD 660S2 |
| Noise control | Sound Isolation |
| Number of Items | 1 |
| Product Dimensions | 24.2 x 18.2 x 10 cm; 260 g |
| Recommended uses for product | Recording |
| Sensitivity | 104 dB |
| Specific uses for product | Professional |
| Style | open-back |
| Unit count | 1 Count |
| Water resistance level | Not Water Resistant |
| Wireless communication technologies | Kopfhörer mit Kabel |

## Product Details

- **Brand:** Sennheiser
- **Colour:** Black
- **Ear placement:** Open Ear
- **Form factor:** Over Ear
- **Impedance:** 300 Ohms

## Images

![HD 660S2 Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black - Image 1](https://m.media-amazon.com/images/I/81EVN1kWYjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***U on 1 January 2026*

J’en ai eu des casques, de toutes marques, de toutes technologies, mais je penses avoir enfin trouvé le Graal ! Alors attention, mon avis est bien évidemment subjectif et dépend entièrement de ma configuration matériel ! Utilisé principalement sur mon ampli (Yamaha A-S1100) pour l’écoute de vinyles (Pro-ject PRO avec cellule 2M Black et preamp à lampes). J’avais craqué jusqu’à présent sur un Grado SR325X qui est vraiment excellent mais pas des plus confortables, le HD660S2 me faisait de l’œil depuis longtemps.. malgré certains commentaires qui laissent entendre un manque de basses, c’était justement l’un de mes objectifs, car depuis l’acquisition du preamp à lampes ces dernières étaient devenues un peu trop “brouillonnes” et je cherchais à les maîtriser au delà de ce que le Grado permet. Et la.. le mariage parfait !! Le Sennheiser m’apporte un équilibre vraiment parfait (encore une fois d’après mon matériel). J’obtiens des basses suffisent puissantes et d’une précisions folle ! Les médium sont également légèrement relevés ce qui lève un certain “voile” présent sur les voix et les aiguës sont cristallins ! Peut-être un peu trop présent au déballage mais au bout de quelques heures de lecture, ceux-ci s’apaisent pour devenir juste excellent ! Je suis vraiment ravi de mon achat !

### ⭐⭐⭐⭐⭐ Review
*by G***O on 6 October 2025*

These headphones are worth every cent. Audio quality coming from them is incredible provided that you couple them with a quality audio source. Keep in mind that these headphones are quite demanding, so to get sufficient volume you need adequate source. The sound is somewhere between neutral and warm, at least to my ears. I use them with FIIO M23. At medium gain, the player drives HD 660S2 perfectly and the sound is as close to analog as possible. With HiBy R6 III they sounded great as well. The only downside (but that is a general downside of open headphones, not of this in particular) is that in a noisy environment you hear noise as well. However, if your environment is quiet, these headphones will give you unmeasurable pleasure. Even though they are not small, they are quite light and very comfortable to use all day along. Build quality is very good and solid and again underlines the premium brand. The headphones come both with 3.5mm and 4mm cables, which is very useful depending on what player/DAC/source you use.

### ⭐⭐⭐⭐⭐ Review
*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 Croatia*
*Store origin: HR*
*Last updated: 2026-02-02*