

🎶 Elevate your audio game — hear what others miss!
The Sennheiser HD 660S2 wired audiophile headphones deliver natural, relaxed high-fidelity sound with enhanced sub bass thanks to a 42mm airflow-optimized transducer and ultra-light 300-ohm aluminum voice coil. Featuring an open-back design for exceptional comfort and ventilation, these headphones cover an expansive frequency range of 8 Hz to 41.5 kHz. Crafted with German engineering and Irish manufacturing, they come with detachable cables and a vented magnet system to minimize distortion, making them ideal for professional-grade music listening and long sessions.



























| ASIN | B0BRT1ZN7Q |
| Age Range Description | Adult |
| Antenna Location | music |
| Audio Driver Size | 42 Millimetres |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | 17,110 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 95 in Studio Headphones |
| Bluetooth Version | 5.0 |
| Box Contents | 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 |
| Brand | Sennheiser |
| Brand Name | Sennheiser |
| Cable Features | Detachable |
| Colour | Black |
| Compatible Devices | Smartphone |
| Control Method | Touch |
| Control Type | Media Control |
| Customer Package Type | Protective delivery packaging with a portable carry pouch |
| Customer Reviews | 4.5 out of 5 stars 734 Reviews |
| Ear placement | Over Ear |
| Earpiece Shape | over_ear |
| Enclosure Material | Aluminium |
| External Testing Certification | nao aplicavel |
| Form factor | Over Ear |
| Frequency Range | 8 Hz - 41.5 kHz |
| Global Trade Identification Number | 00810091270370, 04260752330374 |
| Headphone Form Factor | Over Ear |
| Headphone Jack | 1/4 inch TRS, 4.4 mm TRRRS |
| Headphones Ear Placement | Over Ear |
| Impedance | 300 Ohms |
| Item Weight | 0.3 Kilograms |
| Manufacturer | Sonova |
| Model Name | HD 660S2 |
| Model Number | 700240 |
| Network Connectivity Technology | Wired |
| Noise Control | Sound Isolation |
| Noise control | Sound Isolation |
| Number of Items | 1 |
| Product Features | stereo pairing |
| Series Number | 700240 |
| Specific Uses For Product | Music |
| Style Name | Headphones |
| Theme | Music |
| Unit Count | 1.0 count |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology Type | Bluetooth |
P**H
Not worth the hype
Well…a few hours in and let’s say I am not overwhelmed. Very little difference between these and XM5s and maybe not so good. Returning.
N**.
truely cheap truly crap
the original hd650 is 10 times better , bass cannot hold , was in a cheap box dont buy them
E**E
Outstanding Sound Quality and Comfort
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.
V**A
Du pur Sennheiser
Son exceptionnel
U**.
Gutes Gerät
Typisch Sennheiser sehr gute Qualität
A**R
Fantastic headphone
Ok.The Skinny of it... A little rough in the edges but..still acceptable by listening standard. Compared to AT WP 900 this model is on the softer side and rougher on the highs. Compared to Grado SR60 the sound is compressed with this headphone. Compared to Sony MZR 2 the 1k version that is opened and not compress but you feel you want to play it louder. But no complains if you want to pamper yourself. Finally compared to the top of the line Focal 6k model. This one is bar none. Dynamics highs mid and tonal separation this is serious stuff. But Seriously all running on the same LG V60 as source with Tidal and with USB audio pro meaning it is forced to output 16bit. Not 48.... Final word for the price...we have to be fair for the quality of sound on the price. If you were to compare it with the AT WP900 same price but now with the promo the Senheiser is reasonable value for money. Atleast if you are thinking about giving this to your teenage kids.Fine with it. No complaints. Cause if you look at it in this way every 6months they will end up buying new cans. Cause the wires just snap but with the Senheiser you can easily replace them. All the parts sponge head sponge and the cables you can swap them when wear and tear approaches.Besides you only have 1pair of ears so either you take good care of them for the better part of your life or you end up loosing to be deaf as time and age passes by. Your choice. For me I will this model. It is fine for daily use.Reasonable.
J**S
Experiência sonora absurda, com pequenos poréns de construção
Comprei o Sennheiser HD 660S2 buscando um salto real em qualidade sonora — e ele entrega exatamente isso. É um fone que muda a forma como você escuta música: você não apenas ouve, você começa a perceber camadas, texturas e detalhes que passam despercebidos em fones comuns. A assinatura sonora é natural, quente na medida certa e extremamente detalhada. Graves são presentes e bem controlados (inclusive subgrave, algo raro em fones abertos), médios são muito bons para vozes e instrumentos, e os agudos são suaves, sem fadiga. É o tipo de fone que te faz ouvir um álbum inteiro com atenção — Daft Punk, trilhas do Hans Zimmer e música acústica ficam simplesmente incríveis. O palco sonoro é amplo e bem definido, criando uma sensação quase “tridimensional”, mesmo sendo estéreo. Para quem gosta de ouvir música com calma, atenção e qualidade, é um fone excepcional. Pontos negativos (ou melhor, pontos de atenção): O acabamento é majoritariamente em plástico. Ele é bem construído, sólido e claramente premium, mas considerando o nível e o preço do produto, poderia usar materiais mais nobres como metal e/ou madeira em algumas partes. No início, achei o fone um pouco pesado, principalmente em sessões longas. Felizmente, isso melhora com o uso — o conforto acaba se tornando muito bom depois que você se acostuma. Considerações finais: Não é um fone “plug and play” para qualquer situação: ele se beneficia bastante de uma boa fonte (DAC/amp), e não é feito para uso portátil. Mas no ambiente certo, ele entrega uma experiência sonora de alto nível, que justifica plenamente o investimento. Logicamente o ideal é você ouvir músicas com mais qualidade (nada de radio online ou streaming que te entrega um audio mais compactado). Ele vai tocar bem, mas com a qualidade certa, a experiência sonora é superior! Se você gosta de música de verdade e quer subir de patamar na forma de ouvir, o HD 660S2 é uma escolha excelente.
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1 month ago
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