🎶 Elevate your audio game — hear every detail, feel every beat.
The Sennheiser HD 660S2 are premium open-back audiophile headphones featuring a 300 Ohm impedance and an ultra-wide 8Hz to 41.5kHz frequency response. Engineered in Germany and assembled in Ireland, they utilize a 38mm ultra-light aluminum voice coil and airflow-optimized transducers to deliver deep, distortion-free bass and crystal-clear highs. Designed for extended comfort with plush velour ear pads and a lightweight frame, these headphones come with multiple cables and adapters for versatile connectivity, backed by a 2-year warranty.
| Noise Control | None |
| Frequency Response | 41500 Hz |
| Headphones Jack | 3.5 mm Jack |
| Model Name | HD 660S2 |
| Connectivity Technology | Wired |
| Included Components | 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,,,,, |
| Age Range (Description) | Adult |
| Material | Aluminium |
| Compatible Devices | Desktops, Laptops, Tablets, Cellphones |
| Theme | music |
| Control Type | Media Control |
| Cable Feature | Detachable |
| Item Weight | 260 Grams |
| Frequency Range | 27.5 Hz - 41,500 Hz |
| Net Quantity | 1 Count |
| Control Method | Touch |
| Number of Items | 1 |
| Cable Length | 180 Centimetres |
| Audio Driver Type | Dynamic Driver |
| Earpiece Shape | Over Ear |
| Is Autographed | No |
| Series number | 660 |
| Global Trade Identification Number | 04260752330374 |
| Manufacturer | Sennheiser, Sennheiser electronic gramsbH & Co. kilograms. Am Labor 1. DE - 30900 Wedemark Germany |
| Model | 700240 |
| Model Year | 2023 |
| Item model number | 700240 |
| Special Features | Audiophile Stereo Headphones |
| Batteries Included | No |
| Batteries Required | No |
| Cable feature | Detachable |
| Includes Rechargeable Battery | No |
| Manufacturer | Sennheiser |
| Country of Origin | Ireland |
| Item Weight | 260 g |
A**U
Amazing detail & wide soundstage from a closed back
Amazing detail in sound. The HD820 headphones are very comfortable with moderately good sound isolation. The headphones originally had an issue with the right side driver emitting soft rattle with heavy bass frequencies. Contacted Sennheiser (Sonova India) and got a replacement under warranty. The experience with Sennheiser Service (Sonova India) was seamless. Everyone along the chain were prompt in responding & updated me on the status. The Rep assisted me by guiding me on how to send them to the service centre in Delhi. Everything went seamless. With this service experience with Sennheiser India, i now have more confidence in buying more Sennheiser products. I constantly keep track for deals on Sennheiser Headphones. Started my Audiophile Journey with Sennheiser MXW1 (World's 1st Wireless Earbuds) in 2008 and bought several Sennheiser Headphones all over the world since. No matter what country i was in i was able to find Sennheiser products easily compared to any other brand. The journey continues.
S**A
Incredible
I'm not a proper audiophile, I was using the sony 1000xm3s before this which I was really happy with. But this Sennheiser is on a different level in every aspect except outright bass. I'm Starting to understand why audiophiles spend so much money on their audio.
G**8
Best all rounder headphones
I upgraded from bunch of headphones like the HD650 and the DT990 edition.The headphones build quality is good despite being lightweight, the earcups are bigger and puts less strain on someone like me who needs reading glasses.The sound is neutral type. Which means it's very good at mids if you have a neutral sounding DAC. Yes a DAC is needed since except my macbook M2 max not other device can drive it that good.The last thing is that these double as a very good gaming headset. Wish there was an option for a cable with a strap on mic like vmoda or my beyerdynamic for gaming. It's a missed opportunity I guess. Def justifies it's price.
S**A
Great Sound Quality, no ANC, tight fit
Extremely good sound quality, I have airpods pro 2, sony 1000xm5 headphones , a hyperx one .. and in pure sound clarity and quality terms , this beats all. But no ANC mode is probably the only con.
V**I
Best sound quality
I use many wireless Bluetooth headphones from Bose and Sony. First time I’m trying to understand the Hi-Res headphones, definitely there is a noticeable difference when I listened first time with this Sennheiser HD660S2. But this needs an Amplifier/DAC, without amp/dac it’s not good, not portable like any other wireless headphones. I’m happy I bought this headphones, it’s amazing to listen some of the Hi-Res tracks.
S**R
Not good
Why did you pick this product vs others?:Nothing special I don’t know why it is famous everywhere
Trustpilot
3 days ago
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