Name: Headphones Sennheiser Consumer Audio HD 660S2 Wired Black
Brand: Sennheiser
SKU: 2CV051YVEK09
Availability: OutOfStock
Rating: 4.7 (24 reviews)

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Headphones Sennheiser Consumer Audio HD 660S2 Wired Black

Headphone Type

Headphone Style

Wireless

Brand

Colour

Material

Sennheiser Consumer Audio HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black

- 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

Model

Manufacturer Part Number

Universal Product Code (UPC check)

Sound

Quality

Bass

Upgrade

Compared to my old HD650 pair these new 660S2 cans are more appealing - the old ones were great but boring, these have some cool style and the accurate sub bass will help mixing, these are ustill neutral and flat enough to use seriously for judging the tonal characteristics of a mix

Cool upgrade from my HD650 pair

Sennheiser

I am very happy with this purchase.  Supremely comfortable to wear, very nice/quality engineering produces a high fidelity sound experience... I particularly appreciate Sennheiser following up with the sound samples via email, whereby I received a 'guided tour' of the capabilities built into these headphones... Supreme quality - excellent sound reproduction - no regrets, would buy again...

Supreme Quality

I pulled out the black foam in the middle/inside of each “can” and got a WAY BETTER CABLE and WAY BETTER EAR PADS!!!  Now these sound/perform WAY BETTER THAN STOCK!!!

AntSlappy's HD 660S2 mods

I bought the 660S2 HP expecting mid level performance in this day and age of 3K to 6K top of the line HP. Was very surprised when I A/B'd this set with Hifiman Susvaras. Bass response was very good; attack and decay was better in the Sennheisers vs the Susvara. The Sennheisers were considerably warmer sounding than the Susvara, but in a musical way, not muddy or smearing. The Susvara has a bit more "air" and inner detail, but not 6K worth. I did not experience a broad sound field with either HP. Subtle detail like the bells in John Klemmers Touch were a bit more evident in the Susvara but still very much present in the 660s. Driving the Sennheisers was considerably easier than the Susvaras as has been noted elsewhere, but cabling is less critical with the more sensitive Sennheiser's higher 300 ohm impedance; wire gage makes less of a difference if you have longer wire runs as opposed to the low sensitivity 60 ohm Susvara. I found I had to crank my class A HP amp up full volume with the Susvara leaving little headroom. The Sennheisers were easily driven with that amp with plenty of headroom. I generally I was very surprised at how good the Sennhesiers are, and they are probably 80 to 90% of the performance of the Hifiman product, some may find them overall better.

Way better than expected

Nearly every review I have read and YouTube video I have watched has told me that the 600's and 650's are superior to the newer 660s2's despite their age, so I believed them and bought some 650's. Yes they are exceptional cans and deserve their legendary status, but curiosity got the better of me and decided to try the 660s2's.
Granted I'm no expert, but I think the 660s2's are better headphones in every single department. Ever so slightly more comfortable, a smidge more bass, a tad more detail, a bit wider soundstage and a more modern, stylish paint job. I think they are a step forward, not by much, but how could they be? Sennheiser shot themselves in the foot all those years ago by setting the bar so high.

They are better

Solid construction. you can feel the quality. Don't let the plastic deter you from buying these. The clamping force is a little much, but I have a large head. I used my headphone holder, with a couple of folded cloths, to widen the clamping and it now fits perfect. You can wear these all day with no ear fatigue or head pain.
The sound is amazing. The sub bass is present without being muddy. I EQ with my HD600 but the 660S2 does not need it. They pair will with my Schiit Valhalla 2 tube amp.
Not only is this an upgrade to the HD600 (for me), but the 660S2 stands on its own as a great, open-back headphone

Sennheiser knows what they are doing, Bravo!

incredible feel
pure sound
I can hear all the different parts to the music
comfy
lackluster packaging - but I bought headphones, I don't care about how they're stored

desert island headphones indeed

I just purchased my HD660S2 on Black Friday, upgrading from Sennheiser PXC 550 II. I'm a lifetime music lover that just in recent years got interested in hires lossless music. The 660s2 along with Questyle M15i DAC using 4.4mm balanced output is a tremendous sound quality difference with Qobuz music. I can hear a lot of little nuances in the music that wasn't noticeable previously. 
It was a great investment that I had on my radar for a few years.

Novice+ Audiophile Experience

So far, I love these headphones. I listen to music, obviously and they sound incredible. It almost feels like it engulfs me and transports me to a happier place. I also game a lot, and they still sound incredible, the low thuds of artillery fire and the high pitches poorly oiled machinery moving through fields, it sounds like I'm really there at least. (Though maybe not the greatest place to be pulled into) With all my praise I am currently giving these headphones, you may wonder why I felt like I had to give it 9 stars. They are tight, they like to squeeze my head and makes it hard to have on for extended periods. I will admit they are looser than the HD650's out of the box, still tight. However I am the type that struggles to find a hat that fits in stores, so tight headphones are to be expected. All in all, I highly recommend these headphones.

My HD 660S2 experience

Pushing them with a McIntosh 7200 and honestly my first hour was pure buyer's remorse.   After 10 hours not so muffled but hoping for more clarity especially in the treble range.  Bass is not the problem.  So hopefully more time may help  but we'll see.  You'll need an extension if you're going to be couch lounging.   What's with the useless black bag? Really?

Break in is not an option

Touted as the upgrade to the HD 650, but it's more like the upgrade to the HD 58X from Drop.

Doesn't have any of the midrange magic of the 6 series, has meaningfully brighter and harsher treble, and is significantly more expensive. Looks incredible (love the colorway) but sonically it's a miss for me across the board.

Not the upgrade it is purported to be