Koss Pro4S Studio Headphones Over Ear Headphones

Koss Pro4S Studio Headphones Over Ear Headphones 2

Koss Pro4S Studio Headphones Over Ear Headphones 3

Koss Pro4S Studio Headphones Over Ear Headphones 4

Koss Pro4S Studio Headphones Over Ear Headphones 5

Koss Pro4S Studio Headphones Over Ear Headphones 6

Koss Pro4S Studio Headphones Over Ear Headphones 7

Pro4S Studio Headphones Over Ear Headphones

The Pro4S Studio Headphone is specifically crafted for professionals who use headphones every day to create the world's greatest music. Featuring the all-new SLX40 element, tuned for reference, the Pro4S Studio Headphone delivers an incredibly accurate and unbiased sound, perfect for any studio or creative environment.
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The Pro4S Studio Headphone features the natural fitting, iconic “D-profile” earcup, first featured on the ergonomically designed Koss Pro4AAA. The D-profile mimics the shape of the ear, creating an ideal seal for the most consistent sound reproduction and an incredibly natural fit for extended creative sessions.

Designed for the rigors and wear of professional use, the Pro4S Studio Headphone features an incredibly rugged mechanical design using the most durable materials. Aluminum earcups with memory foam cushions wrapped in soft protein leather make the Pro4S Studio Headphone structurally strong but incredibly comfortable.

An all-new integrated, metal-on-metal assembly of the headphone makes the Pro4S Studio Headphone extremely robust in areas where other headphones often fail. The metal headband is cushioned by soft foam wrapped in breathable mesh, perfect for extended use.

The Pro4S Studio Headphone features a detachable cord with dual-choice entry, allowing the user to choose which earcup to connect to for optimum adaptability. Once the cord is attached, the opposite side becomes an output, allowing pass-through listening or daisy chaining for extended monitoring. The Pro4S Studio Headphone folds flat into a travel case for easy portability. (6.3 mm adapter also included)
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Specifications
10-25,000 Hz	35 Ohms	99dB SPL
4.5ft/1.4m Coiled, Detachable with Dual Choice Entry	Limited Lifetime Warranty

Specifications
10-25,000 Hz	35 Ohms	99dB SPL
4.5ft/1.4m Coiled, Detachable with Dual Choice Entry	Limited Lifetime Warranty

Made for Music Professionals

Perfect functionality, amazingly detailed sound.

Key Features:

Koss SLX40 Elements tuned for studio reference

Detachable cord with dual choice entry

10-25,000 Hz Frequency Response

D-profile with memory foam cushions

Fold flat design for portability

Hard shell case

Included: 3.5mm to 6.3mm adapter

Covered under the Koss Stereophones Limited Lifetime Warranty

User Ratings & Reviews

Overall Score:

"Great Sterophones"
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"Just Awesome!"
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"Superb sound quality; Not for huge heads, however"
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Customer Reviews 15 item(s)

Great Sterophones

Overall

Great highs, lows, and mid. Nice separation. High quality build. Comes in a primo case and storage slots!
Review by Don / (Posted on 6/5/2020)

Just Awesome!

Overall

I find myself listening to all my music again and again - everything sounds amazing with these headphones. The sound is very full, and they are really comfortable for long periods of time. I have owned these for 4 years - there is barely a scratch on them, I think they may last forever!
Review by Scott G / (Posted on 11/27/2019)

Superb sound quality; Not for huge heads, however

Overall

I could (and have elsewhere) write a long in-depth review, but I'll spare the details because here's all you need to know about the sound quality: These are very, very accurate headphones that somehow avoid the sterile "lifelessness" of many professional-quality headphones. They're very lively, but maintain a studio-quality accuracy. Tonal balance is perfect. Detail is abundant at every point of the frequency curve. Spaciousness is top-notch for a closed-back headphone. I have absolutely NO complaints on the topic of sound quality.

Build-quality is also top-notch for the price-range. Materials are luxurious and sturdy. I have no doubts about this headphone's longevity.

My only gripe is that they BARELY accommodate my larger-than-average head. I have the headband maxed out, and I can listen for hours (temple-pressure is perfectly fine); but I'd be a heck of a lot more comfortable with some wiggle-room in the adjustability department. My head is large, but it certainly isn't outlier-category.

Even still, I am unwilling to drop from 5-stars just based on this gripe. That should tell you how highly I regard the rest of this headphone. It's almost perfect by my count.
Review by Bierdc / (Posted on 8/26/2018)

the only headphones you'll ever need!

Overall

The only headphones you'll ever need! , sound is great and super comfortable. Couldn't ask for more, well done!
Review by Jason / (Posted on 8/26/2018)

fabulous headphones

Overall

Fabulous. Works with laptop and that great sound. I am old. Been listening
to koss 4aa to esp9 to 4aaat and now these. 43 years all told.
I have never thought to buy another and I have heard some others.These sound wonderful.
Bass is full and sharp. Highs are clear and crisp. Accuracy is phenomonal. I think when I finally go I'm taking these with me.
Review by bestever / (Posted on 4/14/2018)

Pro4S Headphone

Overall

Awesome design, comfortable, neutral and accurate headphones, Koss has been always a good reference for me, thanks!
Review by ju / (Posted on 9/9/2017)

I am impressed with the comfort and quality.

Overall

Right out of the box, i was impressed with the quality of these phones.when I put the headphones on ,I was very pleased with the comfort,but the biggest thing I noticed was the incredible sound quality. I haven't heard this kind of accurate sound from any of my headphones.This is money well spent. For once, I've got my moneys worth!! THANKS !!
Review by locke lane / (Posted on 9/7/2017)

Great Sound, Build Quality, and Outstanding Comfort

Overall

I have had these headphones for 6 months now and have barley showed any sign of wear, which is impressive considering they are used on a daily basis for hours on end. These headphones reproduce sound amazing well in comparison to Audio-Technica's ATH-M50 and Grados SR60e (Not saying both of these are bad!). The build quality feels and performs great from the metal construction and leather ear pads. Their comfort is plainly amazing from their light weight, comfortable ear pads, and shape. And unexpectedly, their sound canceling is greater than I imagined and felt the dual 2.5 MM jacks were a pleasant convenience. In my mind, these are the perfect headphones that are firmly worthy of the cost.
Review by Corefinder / (Posted on 6/15/2017)

Being in the band

Overall

The balance, detail, vocal or instrumental background separation and clarity are delivered in excellent isolation. The sense of being in the "band" is prominent and for me a step up from "listening" or attending to sound exclusively.
Review by Flint / (Posted on 4/16/2017)

High expectations more than met!

Overall

Have been a Koss fan since my first set of Pro4AA's in the late 70's. Those were followed up by Pro4X's and then PortaPro's, UR40's and BT540i's. Each better than the last. Then, I purchased a set of these for my oldest son as a Christmas gift (to be his 3rd set of Koss stereophones) and asked for a listen....Blown away!! Those who don't realize that these are tuned for studio / production work may not expect the flat response (across the full spectrum) these deliver (possibly expecting the overdriven bass of some competing brands). The balance is what brings every detail out with stunning clarity and has me hearing things I have never noticed in music I have listened to hundreds of times! Couple this with light weight, Koss quality (and warranty), and good looks and the Pro4S is impossible to beat even at far greater cost!
Review by OldSchoolSound / (Posted on 2/24/2017)

Outstanding!

Overall

This is the third pair of Koss phones I have owned. Without a doubt, the best sounding phones I have owned to date. Also, the most comfortable phones. Highly recommended.
Review by Hoffie51 / (Posted on 2/22/2017)

Great phones for the studio

Overall

I have used Koss Headphones for many years in my recording studio.. My Pro 4AA are my studio workhorse's.... I bought the PRO4S just to check my mixes with and could not believe how flat they were.... I do not care for the detachable cable, it falls out all the time.... If Koss comes out with the PRO4S element " SLX40 " in headphones with a attached cable I would be buying a few of them....
Review by Mie / (Posted on 1/2/2017)

Holographic imaging

Overall

I believe in the Koss brand for many reasons: incredible sound, quality, history, and that lifetime warranty. I figured these cans would be something special but I am blown away by the rich full sound. I knew based on the frequency range that these can get low but it's the beautiful highs that delight the senses. You can't go wrong with these as they are also easily driven by all types of devices (my Nexus 7 required an amp to be heard properly but not with these).
Review by gBoogie / (Posted on 12/3/2016)

Beautiful

Overall

These babies remind me quite a bit of my old Pro-4AAA (which I still use and cherish.) Best new Koss product in decades. I spend a lot of time in the broadcast and recording studio. I've used a lot of brands and models. These are now #1 with a bullet on my charts. If I spend $400 I can match these... but why bother! Great price and great value.

Pros: Fit, sound insulation, freq. response, rugged construction

Cons: none
Review by Mr. Weasel / (Posted on 2/23/2015)

OUTSTANDING

Overall

THESE SOUND GREAT RIGHT OUT OF THE BOX.HEAVEN KNOWS HOW GREAT THEY WILL BE IN 50 HOURS-PRETTY COMFY A LITTLE TIGHT CLAMP FORCE-FANTASTIC SOUND STAGE-HIGHS LOWS MIS GREAT LIFETIME WARRANTY GREAT PRICE COULD NOT ASK FOR MORE-THANKS KOSS-HOPE THE STAND UP AS GOOD AS MY PRO 4AAA DID THEY ARE STILL GOING STRONG- NOW THE DELIMA WHICH DO I PREFER BETTER?????

Pros: SOUND-WEIGHT- LOOOKS-COMFORTABLE PADS

Cons: A LITTLE TIGHT CLAMPING
Review by G / (Posted on 11/21/2014)