Pivoting ear cups and an adjustable/detachable headband ensure ultimate comfort and convenience.
The Perfect Pair
Includes energizer, battery pack, leather carrying case, connecting cables, and 120 VAC adapter.
Unbeatable Sound Quality
Electrostatic transducers deliver clean bass and unmatched sound quality.
The Pinnacle of Audio Reproduction
Featuring remarkable power and unmatched sound quality.
Key Features:
Electrostatic transducers deliver clean bass and unmatched sound quality
Pivoting ear cups and an adjustable/detachable headband ensure ultimate comfort and convenience
Straight, dual-entry 4 foot cord with 6 foot extension
Includes energizer, battery pack, leather carrying case, connecting cables and 120 VAC adapter
Covered under the Koss Stereophones Limited Lifetime Warranty
ESP950 Electrostatic Headphone
Not only do these professional headphones provide extremely low distortion, they also offer unbeatable sound quality and reproduction for an utterly unique listening experience.
"Exquisite sound quality. Easily surpasses anything near the price." Read more...
"Amazing sound but not amazing build quality" Read more...
"The Headphone equivalent of the 'Monolith' from 2001: A Space Odyssey" Read more...
Customer Reviews 10 item(s)
Exquisite sound quality. Easily surpasses anything near the price.
Overall
I first purchased these headphones almost 30 years ago. I have heard, and owned, many other makes and models, and am consistently surprised at how timeless the musical reproduction remains. The ESP950s provide excellent imaging, superb transient detail, wonderfully warm sound, and excellent dynamics, coupled with a long term comfort rarely found on esoteric transducers such as these. While I have heard better reproduction through other headphones, I wasn't quite willing to part with the price multiples of what these cost. Highly recommended, and proof that newer is not necessarily better.
Review by Takashic /
(Posted on 11/26/2018)
Amazing sound but not amazing build quality
Overall
First of all, these headphones sound amazing. Much better than the Sennheiser HD650s. I do wish that the were a little tighter on my head though. But they are very light and comfortable. The bottom line is that they sound amazing.
Review by Shane /
(Posted on 3/1/2017)
The Headphone equivalent of the 'Monolith' from 2001: A Space Odyssey
Overall
These Electrostatic headphones are an incredible value, objectively providing broadband linearity and a uniform amplitude response across the key audible spectrum. Orthogonal transducers,especially of the electrostatic variety like this are generally many thousands of dollars as an entry price point in comparison.
The ESP950's transducers have an enormous planar area - one of the largest ever in a pair of headphones to my knowledge - they cover the sides of your head from hair to jawline! Despite this, they are very lightweight (the mylar diaphragm is so thin it is transparent!) and are truly an open headphone in a sense that traditional dynamic headphones simply cannot claim to be.
The resulting sound is not only highly accurate, the massive scale and transparent airiness combines to provide a truly breathtaking listening experience. While many headphones claim to reproduce the experience of listening at a concert, these do a better job than most speakers of that scale can claim. . . it's more like listening to your recordings as they sounded in the studio itself.
Finally, the lifetime warranty on these is excellent peace of mind. I simply couldn't imagine investing this much into a pair of headphones without having Koss' legendary warranty to back it up.
Review by Ian /
(Posted on 1/28/2017)
Still great after 20 years of use!
Overall
I purchased these back in 1994, other than ear pad replaments, they have been flawless. These are still the best headphones I have ever owned. They are very smooth from top to bottom. Plenty of detail with the as well. The bass is well extended, not boomy. The mids are as clean as you can get. They highs are crystalyn but not bright. The only drawback I can think of is they can make the our ears sweat after a while. The construction seems a bit flimsy, but they have held up nice for me. Better than my ancient Stax electret I still have.
Review by Timb5881 /
(Posted on 10/13/2016)
Electrostatics, A Pure Sound Source
Overall
As a professional recording engineer & audio purist, I've always wanted a pair of ESP950 headphones. Once I purchased a set, I was mesmerized by the sound quality. If you elect to hear crystal clear music without coloration or over-emphasized bass, then these are the headphones of choice. You'll notice subtleties you didn't know existed in your recordings. Other headphones mask what's really there. Dynamic headphones can't mach the sound quality of electrostatic headphones. The are well worth the investment.
Pros: Transparent Sound Quality
Cons: None
Review by Professional Studio /
(Posted on 3/10/2015)
A true bargain
Overall
I actually own 2 pair of these and have one hooked to my 2 channel audio only stereo and one to my a/v system. These headphones provide absolutely unmatched sound reproduction at a price that is very low for the technology involved. The depth of the soundstage is exactly as the recording engineers first intended. They have to be heard to be appreciated.
Pros: Unparalleled sound reproduction
Cons: Unparalleled sound reproduction
Review by Roger /
(Posted on 12/23/2014)
Outstanding Sound, with Comfort
Overall
I have owned these for 10 to 20 years and used the warranty at least once, at which time the drivers were renewed. I felt guilty spending so much on a set of headphones - until I heard them, after which I never regretted the purchase. My speakers include a pair of time-corrected (with digital crossovers) K-horns in a 5.1 system, a pair of Dayton-Wright electrostatics in another 5.1 system, and a pair of Ambience ribbon speakers in a 2.1 system. All excellent, but none better than these headphones.
Cons: Open design with little attenuation of ambient noise
Review by SAB /
(Posted on 2/14/2014)
Heavenly
Overall
These are some of the best high-end headphones out there. The sound of these phones is full and natural. No heavy bass or bright highs. You can listen all night long. They are very comfortable, and lightweight. Pricey, but there are deals out there. The 950 have a very open sound, which is a bit different from other headphones I have.
Pros: midrange to die for!
Cons: NONE
Review by dwest /
(Posted on 1/23/2014)
THE BEST THERE IS
Overall
I've had these for 20 years now and love them. If you are into private listening with fullness and detail you should have a set of these. I am looking to buy a 2nd pair for my other stereo. They really stand behind the product. I had a problem once and they replaced them no questions asked.
Pros: Everything
Cons: None
Review by Sasquauch /
(Posted on 11/27/2012)
Koss electrostatic head phones
Overall
Awesome head phones if you have the money to buy them. They sound great if you run a tube amp in to them. The high, mids, lows sound great! They have a free lifetime warranty.
Pros: great sound, every things
Cons: Big
Review by with-held /
(Posted on 8/8/2012)
8-35,000 Hz 
100k ohms 
98 dB SPL/1mW 
Straight, Dual Entry, 4ft 
Limited Lifetime Warranty 
Manual
John C. Koss, Founder