Sennheiser HD 660S

Based on 193 reviews

The Looria Grade (A - F) accounts for multiple factors, including sentiment, helpfulness, and more. Learn about our sources and ranking.

  • Great for the price
  • Comfortable to wear for long periods of time
  • Good build quality
  • Easy to use controls and features
  • Lightweight design


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Top reviews

Sennheiser 660s vs 58x: A Comparative Review
At $170 vs. $500, the 58x is not only the much better per-dollar value, but I do not find that the listener gains anything sound-wise with the 660s. I suspect any claims of the 660s having superior sound are due to slight differences in its stock tuning rather than driver capabilities. The only thing the definitively 660s improves on in my opinion is build quality, which may very well prove important if you plan on keeping these headphones for 10+ years.
2 years ago
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Not the end of the line for me.
Went from HiFiMAN Sundara, to Beyerdynamic DT1990 Pro, to Sennheiser HD 660 S. Tested all 3 with JDS Labs Atom Amp, Scarlett 2i2 1st Gen, & Tidal. The Sundara was insanely good all around and felt like it was made for my ears, both fit and sound. Bass was awesome thanks to planar tech. Unfortunately...
2 years ago
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HD 660 S review - Magical legendary-ness - S Tier goodness
Let me start this off correctly. These are the best and closest to perfect headphones you will be able to find overall. The 660 S is pure magic for your ears. It’s worth the price. 💯 We can’t really talk about the 660 S without talking about the 650. I had the HD 650 back from 2013 to 2016 until I ...
7 months ago
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Sennheiser HD 660 S
The Sennheiser HD 660 S are good open-back critical listening headphones. They have a good audio reproduction and are comfortable enough for long listening sessions. However, they are quite a bit tighter than other Sennheiser headphones we've tested, like the Sennheiser HD 650
Jean-Simon Bonneterre
1 month ago
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I currently own a pair of HD 660s (£275), previously paired with Modi/Magni stack (sold). I'm looking for headphones that firstly have punchier bass (sorry for terminology) and a better soundstage for Valorant (competitive fps). I love all the extra sounds I can hear over my last setup (Astro A40s) but I'm missing the bass and haven't found the difference to be worth the cost, personally.
Around 2 years ago I started getting interested in “audiophile” headphones. For my first purchase, I wanted to go with a pair of open back headphones, as I loved the wide sound stage they gave compared to closed backs, so I purchased a pair of Sennheiser HD 660s. I used them for around a week but eventually returned them because I didn’t feel like they were worth the £429 price tag, and I wasn’t necessarily impressed by the sound. Unbeknownst to me, I was a little lacking in the knowledge department of high end headphones.
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1 year into this hobby - I only speak german and chinese
After a while i needed something new, so i got the 660s, also very good and in combination with the darkvoice and vocal focused music it's like a dream. So, whats the next logical step to take? Be happy with my current setup or buy a headphone around 1k€? Have my eyes on the ananda or maybe even some lcd 2/3.
1 year ago
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Amazing headphones, the best I've ever used
I bought these as well as the Beyerdynamic DT 1990 Pro to compare the two. The latter lost, easily. The HD 660 S is incredible. No frequencies pop out like the Beyerdynamics (too harsh in the high end), everything is very even. Excellent in the mid-range for sure, unlike many headphones that try to ...
4 years ago
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I haven't wanted to buy another set since buying these
I buy a lot of headphones and IEM's. Currently at over 100 pairs, and since buying these I haven't even thought of buying anything else. Haven't even browsed to see if there's some new hotness. The sound on these is spectacular when it comes to gaming. I had no trouble figuring out direction and sep...
2 months ago
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You may have been told by a CERTAIN* reviewer that the 58x & 660s sound the same...
I picked up a pair of the 660s and they are a massive improvement. Now don’t get me wrong, the 58x and 660s do sound “SIMILAR” but they are by no means indistinguishable. The 660s has greatly improved instrument separation and treble detail.
1 year ago
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Form Factor

Over Ear



Connectivity Technology

Wired 6.35 mm / 4.4 mm Pentaconn

Age Range (Description)