--- product_id: 507909782 title: "HD 660S2 - Audiophile Open-Back Over Ear Headphones with Deep Bass Extension and Refined Acoustic Performance, Over-Ear Headphones for PC, Music, Gaming, Podcasts, Premium Black" brand: "sennheiser" price: "€ 882.40" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.gr/products/507909782-hd-660s2-audiophile-open-back-over-ear-headphones-with-deep store_origin: GR region: Greece --- # 300 ohm impedance for clean impulse 42mm dynamic drivers 8 Hz - 41.5 kHz frequency range HD 660S2 - Audiophile Open-Back Over Ear Headphones with Deep Bass Extension and Refined Acoustic Performance, Over-Ear Headphones for PC, Music, Gaming, Podcasts, Premium Black **Brand:** sennheiser **Price:** € 882.40 **Availability:** ✅ In Stock ## Summary > 🎶 Elevate your audio game — hear what others miss! ## Quick Answers - **What is this?** HD 660S2 - Audiophile Open-Back Over Ear Headphones with Deep Bass Extension and Refined Acoustic Performance, Over-Ear Headphones for PC, Music, Gaming, Podcasts, Premium Black by sennheiser - **How much does it cost?** € 882.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/507909782-hd-660s2-audiophile-open-back-over-ear-headphones-with-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 - • **Deep Bass Extension:** Feel the power of lows from 27.5 Hz with precision that transforms your music and gaming. - • **Fatigue-Free Listening:** Breathable open-back design with plush velour cushions for hours of comfortable use. - • **Audiophile-Grade Soundstage:** Experience a spacious, natural sound that immerses you in every note and detail. - • **Premium German Craftsmanship:** Durable, elegant build engineered for long-lasting performance and style. - • **Versatile Wired Connectivity:** Detachable cables with multiple adapters for seamless use across devices. ## Overview The Sennheiser HD 660S2 are premium open-back over-ear headphones featuring 42mm dynamic drivers and a wide 8 Hz to 41.5 kHz frequency range. With a 300-ohm impedance, they deliver precise, high-fidelity sound with deep bass extension and a spacious soundstage. Designed for audiophiles, gamers, and professionals, these headphones combine German engineering with breathable velour ear cushions for exceptional comfort during long sessions. Detachable cables and multiple adapters ensure versatile wired connectivity, making the HD 660S2 a top-tier choice for immersive, fatigue-free listening. ## Description Sennheiser delivers premium audio rooted in decades of German engineering. From audiophile headphones to true wireless earbuds, every product is crafted for exceptional sound, long-lasting comfort, and intuitive design. Experience rich detail, powerful clarity, and immersive listening wherever life takes you with Sennheiser. 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. The non-fatiguing HD 660S2 gives people who love music an intimate way to connect more deeply with their favorite songs and artists. Breathtaking resolution and precision take you closer than ever to instruments and vocalists. Yet the sound is natural and balanced, never harsh or brash. By doubling the sound pressure at the lowest frequency, we retained incredible precision and balance throughout the sub-, mid-bass, and beyond. Extension on the low end changes everything, creating more space for the sound. Against a deeper backdrop, the highs feel more brilliant, emotions stronger. The velour earpads can only be described as 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, either. As an open-back design, the HD 660S2 gives your ears an extremely comfortable climate. High-end Sennheiser headphones like the HD 600, HD 650, and HD 660S are known for their balanced, natural sound. The HD 660S2 shares this legacy with a revised 300-ohm coil for cleaner impulse response, a compliant surround for lower resonant frequency, and optimized airflow for better sensitivity. Do you recognize the feeling of listening to harsh sounds that annoy you for long periods of time? The HD 660S2 has been developed for detailed yet fatigue-free treble reproduction to keep you focused all day long. With comfort this good, you’ll be ready to extend your gaming sessions even further. HD 660S2 HD 599 HD 560S HD 600 HD 650 HD 800 S ## Features - Audiophile-Grade Open-Back Sound: These Sennheiser over the ear headphones provide a natural, high-fidelity sound with a spacious soundstage. The over the head HiFi headphones are great for immersive music experiences and long listening sessions - Precise Highs & Deep Sub-Bass: Sennheiser open back headphones HD660S2 with ultra-light aluminum voice coil & 42mm transducers deliver detailed highs, rich mids, & deep, controlled bass. Overhead headphones are great for gamers, professionals, podcasters - Powerful Low-End Performance: These wired over ear head phones let you feel every note from piano lows (27.5 Hz) to bass drums (45–60 Hz) with clarity and precision, whether it is for gaming sessions, listening to music, or for desktop use - Exceptional Comfort: Open-back design with breathable, plush ear cushions ensures fatigueless listening during long sessions, making them audiophile headphones that have a comfortable fit and can work for music listeners or as gaming headsets - Premium Build Quality: Sennheiser HD 660S2 audiophile headphones are crafted with expertly crafted materials in Germany & Ireland for durability, elegance, and long-lasting performance, making them head phones over ear for music lovers & music production ## Technical Specifications | Specification | Value | |---------------|-------| | Additional Features | stereo pairing | | Age Range Description | Adult | | Antenna Location | music | | Asin | B0BRT1ZN7Q | | Audio Driver Size | 42 millimeters | | Audio Driver Type | Dynamic Driver | | Best Sellers Rank | #11,135 in Electronics (See Top 100 in Electronics) #455 in Over-Ear Headphones | | Brand Name | Sennheiser | | Built In Media | HD 660S2 headphones, 6.3 mm cable (1.8 m), 4.4 mm cable (1.8 m), 6.3 mm to 3.5 mm adapter, Carry pouch | | Cable Features | Detachable | | Color | Black | | Compatible Devices | Smartphone | | Connectivity Technology | Wired | | Control Method | Touch | | Control Type | Media Control | | Customer Package Type | Protective delivery packaging with a portable carry pouch | | Customer Reviews | 4.5 4.5 out of 5 stars (774) 4.5 out of 5 stars | | Earpiece Shape | Oval | | Enclosure Material | Aluminum | | External Testing Certification | nao aplicavel | | Frequency Range | 8 Hz - 41.5 kHz | | Global Trade Identification Number | 00810091270370, 04260752330374 | | Headphone Folding Features | Over Ear | | Headphone Jack | 1/4 inch TRS, 4.4 mm TRRRS | | Headphones Ear Placement | Over Ear | | Impedance | 300 ohm | | Item Weight | 0.3 kg | | Manufacturer | Sonova | | Model Name | HD 660S2 | | Model Number | 700240 | | Noise Control | Sound Isolation | | Number Of Items | 1 | | Series Number | 700240 | | Specific Uses For Product | Music | | Style Name | Headphones | | Theme | Music | | Unit Count | 1 Count | | Warranty Description | 2 year manufacturer | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** Sennheiser - **Color:** Black - **Ear Placement:** Over Ear - **Form Factor:** Over Ear - **Impedance:** 300 ohm ## Images ![HD 660S2 - Audiophile Open-Back Over Ear Headphones with Deep Bass Extension and Refined Acoustic Performance, Over-Ear Headphones for PC, Music, Gaming, Podcasts, Premium Black - Image 1](https://m.media-amazon.com/images/I/81xpWUthgjL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Is this model better or 660?** A: You have to understand that the Sony Z7M2 are 56 ohms so they are easy to drive. Now on the other hand the 660s are 150 ohms and need a little more power to drive them. Now the 660s2 are 300 ohms which need more power. I have the 660s and have no problems with them. I want to get the 660s2 but don't want to take a chance on buying them and I can't drive them with my setup. Hope this help you out. Have a great day. **Q: Would these be great when used with a Steam Deck?** A: Thanks for your question. The HD 660S2 will go very well with Steam Deck. World Wide Stereo – since 1979 – and a proud authorized Sennheiser dealer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Headphones if on sale *by on Reviewed in the United States June 30, 2026* HD660S2 Review.Comfort: 9Build Quality/Feel 7:10When I first opened the box, I was initially underwhelmed by the build quality. To be fair I was coming from a pair of daily driver beyerdynamic DT 1990 MK1s and those are build solid metal and are very rigid. These are definitely lighter and a lot more plastic and therefore they feel cheaper in the hands. However, the lightness of these headphones is fantastic, they feel great to wear especially on long sessions. I still find the velour on my DT 1990s to be much softer, but that could be due to normal pad break in and it’s not really a fair comparison because there hasn’t been enough time yet. But on the beyerdynamics my ears did touch the drivers for a little bit and the inside of the ear pads and on these my ears are untouched and it feels fantasticSound: 9.5/10I bought these headphones with the idea that I was buying a different flavor of sound from my beyers. Initially I landed on the conclusion that these don’t sound as good but my the 1990s, but after several hours of listening and analyzing, I’ve come to learn that these sound more musical, and sound truly fantastic. They sound better than the DTs in many genres due to them not being so revealing of a song’s potential production mistakes, but there are certain genres like hard rock and metal that don’t excel as much on these, the vocals and bass sound great but the electric guitars and the drums (depending on the song) don’t have enough bite or dynamics.Value: 5/10 (at normal price)At normal retail price of 679.95 I could not recommend these. If you were looking for something cheaper somewhat similar in sound signature, I would go with the HD650 or 6xx depending on your price point. Luckily I was able to snag these on sale for 395 so I feel the value for the price that I paid is very good.My Final thoughts:If you were looking for a warm, musical set of all rounder headphones this is a great option to consider. I don’t think I could recommend them at a price of over $500 though, definitely wait for a sale to snag these. Also, when looking at these consider the type of music you listen to, I would say for about 80% of people these could be someone’s endgame headphone. The other 20% either have a different flavor preference for sound or looking to spend thousands on headphones to get the utmost quality which has diminishing returns. I would happily recommend this to someone looking to buy their first studio headphone or expand their collection. ### ⭐⭐⭐⭐⭐ Outstanding Sound Quality and Comfort *by on Reviewed in the United States May 31, 2026* I don’t consider myself an audiophile, but I do enjoy listening to my music the best way I possibly can and getting as much detail out of my recordings as possible. I use the HD 660S2 primarily with my vinyl setup through a JDS Labs Atom Amp 2, as well as a FiiO KA17 for my cellphone and laptop.The Sennheiser HD 660S2 exceeded my expectations. The sound is detailed, natural, and balanced, with excellent instrument separation and a deep, controlled bass response that never overwhelms the music.Vocals sound lifelike, acoustic instruments are beautifully rendered, and the headphones handle everything from rock and hip-hop to jazz and classical with ease. The imaging and soundstage create an immersive listening experience that keeps me discovering new details in albums I’ve heard many times before.Comfort is another strong point. The headphones are lightweight, well-built, and comfortable enough for long listening sessions without fatigue. The open-back design provides an airy, spacious presentation that makes music feel alive.If you’re looking for a headphone that helps you hear more of your music without sacrificing comfort or natural sound, the HD 660S2 is an easy recommendation. They’re worth every penny, specially if you can catch them on sale like I did. ### ⭐⭐⭐⭐⭐ Exceptional Sound, But Buy From a Trusted Seller *by on Reviewed in the United States June 8, 2026* The Sennheiser HD 660S2 is one of those headphones that reminds you why the Sennheiser name carries so much weight in the audio world. The sound is exactly what you expect from their 600‑series lineage: smooth mids, natural vocals, polite treble, and a relaxed, non‑fatiguing presentation that’s perfect for long listening sessions. Voices are lifelike, the treble never gets harsh, and the overall tuning is detailed without ever becoming shouty.Comfort is another strong point. The velour pads are soft, breathable, and great for extended use. No hotspots, no heat buildup, and no pressure issues even with glasses. They’re lightweight and disappear on your head in a way many premium headphones don’t.Where my experience was mixed was the packaging. The pair I received didn’t feel completely “factory fresh” — the presentation was a bit barebones and had that “possibly handled before” vibe. It didn’t affect the sound, but it did take away from the premium feeling you expect at this price. My advice: buy from a seller known for clean inventory and careful handling.That said, the current $359 sale price is an outstanding bargain. At that price, the HD 660S2 delivers sound quality that normally sits in a much higher tier. If you can grab them at $359, the value is genuinely hard to beat.Once you get a truly new unit, the HD 660S2 is everything people say it is: beautiful, natural sound, zero fatigue, and built to last. A true classic in the audiophile world.If you’re after pure sound quality and long‑term comfort, these are an easy recommendation — especially at the $359 price point. ## Frequently Bought Together - Sennheiser Consumer Audio HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black - NewFantasia Replacement Audio Upgrade Cable Compatible with Sennheiser HD650, HD600, HD580, HD58X, HD660S, HD660S2, Massdrop HD6XX Headphones 3meters/9.9feet --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/507909782-hd-660s2-audiophile-open-back-over-ear-headphones-with-deep](https://www.desertcart.gr/products/507909782-hd-660s2-audiophile-open-back-over-ear-headphones-with-deep) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-08-15*