---
product_id: 529596679
title: "Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty"
brand: "sennheiser"
price: "€ 695.70"
currency: EUR
in_stock: true
category: "Sennheiser"
url: https://www.desertcart.hr/products/529596679-sennheiser-hd-660s2-open-back-hi-res-audiophile-headphones-ultra
store_origin: HR
region: Croatia
---

# 300Ω impedance for pristine clarity Extended sub-bass impact, deep & distortion-free Ultra-light 38mm aluminum voice coil Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty

**Brand:** sennheiser
**Price:** € 695.70
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your audio game — hear every note like a true audiophile!

## Quick Answers

- **What is this?** Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty by sennheiser
- **How much does it cost?** € 695.70 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/529596679-sennheiser-hd-660s2-open-back-hi-res-audiophile-headphones-ultra)

## 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

- • **Open-Back Airflow Design:** 300 Ohm impedance and vented magnet system create a spacious, natural soundstage like high-end speakers.
- • **Studio-Grade Sound Precision:** German-engineered, Irish-assembled for unmatched build quality and sonic accuracy.
- • **Immersive Deep Bass Experience:** Redesigned voice coil and airflow transducer deliver double the low-frequency output without distortion.
- • **Versatile Connectivity & Peace of Mind:** Includes balanced & unbalanced cables plus a 2-year warranty to keep your audio journey worry-free.
- • **Featherlight Comfort for Marathon Listening:** Weighing just 260g with plush velour ear cushions and ergonomic headband for fatigue-free sessions.

## Overview

The Sennheiser HD 660S2 headphones combine German precision engineering with Irish assembly to deliver an ultra-light, open-back design featuring a 38mm aluminum voice coil and advanced airflow transducers. With 300 Ohm impedance and extended sub-bass response, these headphones offer a spacious, distortion-free soundstage ideal for critical listeners. Plush velour ear cushions and ergonomic design ensure premium comfort for long listening sessions, backed by versatile cable options and a 2-year warranty.

## Description

Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty : desertcart.in: Electronics

## Features

- GERMAN‑DESIGNED, IRISH‑ASSEMBLED – Expertly engineered components from Germany assembled in Ireland, ensuring consistent build precision and quality
- EXTENDED SUB‑BASS IMPACT – Redesigned voice coil and optimized airflow double low-frequency output for deep, impactful bass without distortion
- 38MM ULTRA‑LIGHT ALUMINUM VOICE COIL – Delivers improved impulse response and pristine clarity across the 8Hz–41.5kHz range.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
- AIRFLOW‑OPTIMIZED TRANSDUCERS – Advanced vented magnet system and steel-mesh damping reduce distortion while maintaining tight bass and airy mids
- HIGH IMPEDANCE & OPEN DESIGN - 300 Ohm open-back dynamics produce a neutral, relaxed, high-fidelity listening experience ideal for critical listeners
- PREMIUM COMFORT FOR ENDURANCE LISTENING – Lightweight (~260 g), velour ear pads, and ergonomic headband ensure fatigue-free comfort even during extended use
- SPEAKER‑LIKE SOUNDSTAGE – Designed to recreate the openness and space of high-end speakers, capturing natural sound imaging
- INCLUDES PREMIUM ACCESSORIES – Comes with both 4.4 mm Pentaconn balanced and 6.3 mm unbalanced cables plus 3.5 mm adapter for versatile connectivity and carry case
- BACKED BY A 2-YEAR WARRANTY – Enjoy peace of mind with Sennheiser’s trusted quality assurance and after-sales support.
- SPECIFCATIONS - Transducer principle : dynamic, open,Impedance : 300 Ohms, Frequency response (speaker) : 8 Hz - 41,500 Hz, Sound pressure level (SPL) : 104 dB (1 V), Total harmonic distortion (THD) <0,04 % (1kHz/100 db SPL) Adapter: 6.3 mm (1⁄4 inch) to 3.5 mm, Cable length : 1.8 M

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BT7XXYTB |
| Age Range Description | Adult |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #106,464 in Electronics ( See Top 100 in Electronics ) #314 in Over-Ear Headphones |
| Box Contents | 6.3 mm cable (1.8 m), 4.4 mm cable (1.8 m), 6.3mm to 3.5mm adapter, HD 660S2 headphones, Protective Case |
| Brand Name | Sennheiser |
| Cable Features | Detachable |
| Colour | Black, |
| Compatible Devices | Cellphones, Gaming Consoles, Laptops, Music Production Equipment, Portable Media Player, Tablets |
| Control Method | Touch |
| Control Type | Media Control |
| Country of Origin | Ireland |
| Customer Reviews | 4.5 4.5 out of 5 stars (642) |
| Earpiece Shape | Over Ear |
| Enclosure Material | Aluminium |
| External Testing Certification | Não aplicável |
| Frequency Range | 27.5 Hz - 41,500 Hz |
| Frequency Response | 41500 Hz |
| Global Trade Identification Number | 00810091270370, 04260752330374 |
| Headphone Form Factor | Over Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | Over Ear |
| Impedance Unit of Measure | 300 Ohms |
| Importer Contact Information | Sennheiser Electronics India Private Limited, 104 A,B,C Time Tower, Mehrauli-Gurgaon Rd, Sector 28, Gurugram, Haryana 122002 |
| Is Autographed | No |
| Item Type Name | Audiophile Headphone |
| Item Weight Unit of Measure | 260 Grams |
| Manufacturer | Sennheiser, Sennheiser electronic gramsbH & Co. kilograms. Am Labor 1. DE - 30900 Wedemark Germany |
| Manufacturer Contact Information | Sennheiser electronic gramsbH & Co. kilograms. Am Labor 1. DE - 30900 Wedemark Germany |
| Model Name | HD 660S2 |
| Model Number | 700240 |
| Network Connectivity Technology | Wired |
| Noise Control | Sound Isolation |
| Number of Items | 1 |
| Packer Contact Information | Sennheiser electronic gramsbH & Co. KG. Am Labor 1. DE - 30900 Wedemark Germany |
| Product Features | Audiophile Stereo Headphones |
| Series Number | 660 |
| Specific Uses For Product | Music |
| Theme | music |
| UPC | 810091270370 |
| Unit Count | 1.0 Count |
| Warranty Description | 2 Year Warranty |

## Product Details

- **Brand:** Sennheiser
- **Colour:** Black,
- **Ear Placement:** Over Ear
- **Form Factor:** Over Ear
- **Impedance:** 300 Ohms

## Images

![Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty - Image 1](https://m.media-amazon.com/images/I/41uY7ziB-6L.jpg)
![Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty - Image 2](https://m.media-amazon.com/images/I/516yNfWkoPL.jpg)
![Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty - Image 3](https://m.media-amazon.com/images/I/51uQR0+q9kL.jpg)
![Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty - Image 4](https://m.media-amazon.com/images/I/51fHpK5F-ZL.jpg)
![Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty - Image 5](https://m.media-amazon.com/images/I/51x1Qj2WbML.jpg)

## 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: 2026-09-04*