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Koss PRO4AA Noise-Isolating Professional Studio Headphones Condition 1 - Mint Tan

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Koss Pro4AA headphones set the standard for full size professional headphones. They were introduced in 1970 as the first dynamic headphones to delive...Click To Read More About This Product

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OVERVIEW

Incredibly reliable, noise isolating headphones still going strong since 1970.

Koss Pro4AA headphones set the standard for full size professional headphones. They were introduced in 1970 as the first dynamic headphones to deliver true full frequency and high fidelity performance with impressive noise isolating capabilities.

Retired in the late '80s, Koss swiftly returned the Pro4AA headphones to its product lineup due to overwhelming popular demand. They have since remained a staple of studio headphones in the radio and recording industries.

Koss Pro4AAs meet the stringent demands of broadcast and recording professionals who require reliable equipment and superior performance. The full size professional headphones keep unwanted sounds out while letting every note in.

Whether you're a sound professional or an audiophile, Pro4AAs deliver superior isolation, accurate reproduction and sound intensity, and the excitement of a live performance with every recording. Connecting with your music has never sounded so good.

FEATURES
  • Noise isolating professional studio headphones
  • The first dynamic headphones to deliver true full frequency, high fidelity performance
  • Standard-setting design incorporates performance-enhancing technology
  • Superior isolation, accurate sound reproduction and the excitement of a live performance
  • Durable steel and generously padded rubber headband
  • Adjustable slide bars ensure snug fit
  • 8 foot coiled cord with 6.3 mm (1/4") plug

A staple in noise isolated monitoring since 1970; see what the fuss is about.

SPECIFICATIONS
  • Frequency Response: 10-25,000 Hz
  • Impedance: 250 ohms
  • Sensitivity: 95dB SPL/1mW
  • Cord: Coiled, Single Entry, 10ft
Reviews
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Review Snapshot

by PowerReviews
KossPRO4AA Noise-Isolating Professional Studio Headphones
 
4.3

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

82%

of respondents would recommend this to a friend.

Pros

  • Durable (13)
  • Good audio (13)
  • Easy to use (7)
  • Versatile (5)

Cons

  • Bulky/heavy (5)

Best Uses

  • Amateur recording (8)
  • Home studio (8)
  • Professional recording (8)
  • Performances (3)
    • Reviewer Profile:
    • Experienced (9), Professional musician (4), Novice (3)

Most Liked Positive Review

 

Good stereophones with a '70s look

Good insulating headpones. The vintage design is quite nice, if you like it. Driven by a stereo amplifier performs very well with a precise bass, never booming and a precise midrange and high...Read complete review

Good insulating headpones. The vintage design is quite nice, if you like it. Driven by a stereo amplifier performs very well with a precise bass, never booming and a precise midrange and high tones reproduction.
Also tried with an amateur radio tranceiver and ssb voice and am music listening is quite good.
Only a word of warning: some portable audio gear may not be suitable to these headphone due their high impedance. Tried with a portable CD player and the volume output was quite low. On other portable gear the volume output was reasonable: i tried with a Samsumg mp3 player and the volume, while not really loud was satisfactory.

VS

Most Liked Negative Review

 

Sounds like listening to music from a cell phone speaker

I really don't understand the purpose of these headphones. The retro design is cool and the materials feel sturdy enough based on the weight feeling like you are wearing a motorcycle helmet.
Read complete review

I really don't understand the purpose of these headphones. The retro design is cool and the materials feel sturdy enough based on the weight feeling like you are wearing a motorcycle helmet.

There is nearly no low end or clarity, the audio just sounds like a distorted earache inducing mess. They don't even live up to their main purpose of isolation. The ear cups are shaped in a small oval that rest on the ear instead of around them in a perfect circle. I will be returning these. Also, the jack is only a 1/4," not 1/8" with an included adapter like most studio headphones, which I'm guess would annoy some people.

Instead, I will be buying a couple more pairs of Koss UR20's. Very cheap, practically disposable headphones with large round ear cups that even provide more isolation if you simply press them against your head, and a fuller, though a little dull, frequency range that works just fine for tracking.

Reviewed by 17 customers

Displaying reviews 1-17

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(11 of 11 customers found this review helpful)

 
5.0

GREAT SOUND FOR 40 YEARS!

By B3 GUY

from Bronx, NY

About Me Professional Musician

Pros

  • Clear Sound
  • Durable
  • Easy To Use
  • Versatile

Cons

  • none

Best Uses

  • Home Studio
  • Listen To Music You Love
  • Professional Recording

Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

I've been using these more than 40 years. They DON'T break, they're perfect for recording screaming vocals. Those guys(or Gals)want the track VERY LOUD in their cans so they can shred their lungs & still hear the music. Other headphones always leaked into the recording mic. THESE DON'T no matter how loud you crank them. They have also worked great on recordings requiring a little more finesse (4 voice vocal group tracking live over instrumentals, James Taylor-type singer-songwriters). The high-end clarity and deep bottom end are excellent. I'd recommend them to ANYONE. They're great for listening to music,too. You'll hear things that never came out of your speakers. If you work with them for hours(like I have) they CAN get a little heavy but for unextended periods they are VERY comfortable. Better sound than many more expensive models. Worth every cent. BUY 'EM
(No, I don't work for this company,just love these cans)

(5 of 5 customers found this review helpful)

 
5.0

old school cans .

By Electric Cat Studios

from KCMO

About Me Professional Musician

Pros

  • Clear Sound
  • Durable
  • Easy To Use
  • Real Pro Headphones

Cons

  • 250ohm
  • Bulky/Heavy

Best Uses

  • Amateur Recording
  • Events
  • Home Studio
  • Mobile DJ
  • Professional Recording

Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

These cans are the real deal, there's a good reason they have been unchanged since 1970, they are the sm58 of cans, newbies should buy these first so they have a standard to compare to.

(4 of 4 customers found this review helpful)

 
5.0

Good stereophones with a '70s look

By Mike

from Italy

About Me Novice

Pros

  • Clear Sound
  • Durable
  • Versatile

Cons

  • Bulky/Heavy

Best Uses

  • Amateur Recording
  • Listening music

Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

Good insulating headpones. The vintage design is quite nice, if you like it. Driven by a stereo amplifier performs very well with a precise bass, never booming and a precise midrange and high tones reproduction.
Also tried with an amateur radio tranceiver and ssb voice and am music listening is quite good.
Only a word of warning: some portable audio gear may not be suitable to these headphone due their high impedance. Tried with a portable CD player and the volume output was quite low. On other portable gear the volume output was reasonable: i tried with a Samsumg mp3 player and the volume, while not really loud was satisfactory.

(2 of 2 customers found this review helpful)

 
5.0

Can not go wrong

By Austin

from Minnesota

About Me Professional Musician

Pros

  • Clear Sound
  • Durable
  • Easy To Use

Cons

    Best Uses

    • Amateur Recording
    • Events
    • Home Studio
    • Mobile DJ
    • Performances
    • Professional Recording

    Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

    Best headphones I ever owns, my seond set in around 35 years

    (2 of 2 customers found this review helpful)

     
    5.0

    I LOVE IT

    By BOB

    from OATMAN AZ

    About Me Novice

    See all my reviews

    Ask me a question

    Verified Buyer

    Pros

    • Clear Sound
    • Compact
    • Durable
    • Easy To Use
    • Lightweight
    • Versatile

    Cons

    • Limited Functions

    Best Uses

    • Amateur Recording

    Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

    LOVE THE SOUND. VERY COMFORTABLE,WEAR THEM ALL DAY WITH NO DISCOMFORT. BUILT TO LAST FOREVER.

    (1 of 1 customers found this review helpful)

     
    5.0

    Don't pay attention to negative reviews!

    By Dane

    from NJ

    About Me Experienced

    See all my reviews

    Ask me a question

    Pros

    • Clear Sound
    • Durable

    Cons

      Best Uses

        Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

        I have heard negative reviews before purchasing and it almost changed my decision. I'm glad it didn't.
        Koss has been around a long time and there is a reason they revived this old model!!
        Yes they are heavier than most and they might be a little tight for some but isn't that what you want for a pro sound application!!
        Isolation is awesome as well as the sound. Give it a few hours of break in and you'll hear how natural the sound is.
        I also find them comfortable, anyone old enough to have headphones from the 70's and early 80's know what it's like to have headphones hurt! These fit well have good adjustment and feel good.

        (1 of 1 customers found this review helpful)

         
        5.0

        Value +++++

        By ML

        from Philadelphia, Pa.

        About Me Experienced

        See all my reviews

        Ask me a question

        Verified Buyer

        Pros

        • Clear Sound
        • Durable

        Cons

          Best Uses

          • Amateur Recording
          • Home Studio
          • Professional Recording

          Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

          Good sound, can handle loud volume, heavy duty construction. The curly cord is a nice feature.

           
          4.0

          It looks better than it sounds

          By Enrico

          from Miami, FL

          Verified Buyer

          Pros

          • Build Quality
          • History
          • Looks

          Cons

          • Sound may not be for everyone

          Best Uses

          • Collecting
          • Music Listening
          • One more reference for mixing
          • Photography and Video Clips !

          Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

          A classic vintage pair of headphones, but may not be so musical and sweet sounding to eveyone. It sounds quite middy. But it does have a low end extension. The drivers seem to be quite big and they take some driving to sound. That is, these may sound better when conneceted to a real home stereo / receiver, than when connected directly to your iPhone... Build quality is amazing and is is made in the USA as it was in the past. I don't regret having bought them. They are very cool, but just not my "go to", only set to listen on.

          Service and delivery comments:

          Shipping took VERY long to Miami, FL.

          • Was this a gift?:
          • No
           
          5.0

          You can't improve on the best!

          By DrDrums3000

          from Atlanta, Ga

          About Me Professional Musician

          Pros

          • Clear Sound
          • Durable
          • Easy To Use

          Cons

            Best Uses

            • Amateur Recording
            • Home Studio
            • Professional Recording

            Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

            I got my first set of Pro4AAs back in 1976 and flirted briefly with Pro4AAAs before returning to the fold. You can't beat these headphones for clarity and studio isolation. I've used them in home and professional studios, and as a radio DJ. If you want a good set of isolation headphones, you can't go wrong with these.

            (0 of 1 customers found this review helpful)

             
            5.0

            Worked great

            By Evan

            from Houston

            About Me Novice

            See all my reviews

            Verified Buyer

            Pros

            • Clear Sound
            • Durable

            Cons

            • Bulky/Heavy

            Best Uses

            • Home Studio
            • Professional Recording

            Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

            Plug in and enjoy

            (0 of 3 customers found this review helpful)

             
            1.0

            Sounds like listening to music from a cell phone speaker

            By Jacob

            from California

            About Me Experienced

            See all my reviews

            Verified Reviewer

            Pros

              Cons

              • Bulky/Heavy
              • Limited Functions
              • Poor Sound Quality

              Best Uses

                Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

                I really don't understand the purpose of these headphones. The retro design is cool and the materials feel sturdy enough based on the weight feeling like you are wearing a motorcycle helmet.

                There is nearly no low end or clarity, the audio just sounds like a distorted earache inducing mess. They don't even live up to their main purpose of isolation. The ear cups are shaped in a small oval that rest on the ear instead of around them in a perfect circle. I will be returning these. Also, the jack is only a 1/4," not 1/8" with an included adapter like most studio headphones, which I'm guess would annoy some people.

                Instead, I will be buying a couple more pairs of Koss UR20's. Very cheap, practically disposable headphones with large round ear cups that even provide more isolation if you simply press them against your head, and a fuller, though a little dull, frequency range that works just fine for tracking.

                 
                5.0

                Great Headphones

                By todd13

                from Tennessee

                About Me Experienced

                Pros

                • Clear Sound
                • Durable
                • Easy To Use

                Cons

                  Best Uses

                  • Amateur Recording
                  • Performances
                  • Professional Recording

                  Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

                  Great set of headphones. Had to have the high ohms because of the line6 floor board. Work and sound great.

                   
                  5.0

                  I love this headphone!

                  By Steve

                  from Winter Park, FL

                  About Me Experienced

                  See all my reviews

                  Pros

                  • Clear Sound
                  • Durable

                  Cons

                  • Bulky/Heavy

                  Best Uses

                  • Performances

                  Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

                  This headphone seals off all extraneous noises and gives a clear and accurate sound so that I can properly mix the band. It is also great for listening to my favorite recordings. I also own a pair of Koss HV1 since the seventies. Koss is very well built.

                  (0 of 2 customers found this review helpful)

                   
                  5.0

                  Very Pleased

                  By Gunner

                  from Michigan

                  About Me Experienced

                  See all my reviews

                  Pros

                  • Clear Sound
                  • Comfortable
                  • Durable
                  • Soft Coil Wire
                  • Versatile

                  Cons

                  • none

                  Best Uses

                  • Amateur Recording
                  • Home Studio
                  • Relaxed Listening

                  Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

                  Would be nice to have a hanger on top, do not want to rune the top pad so I lay them down. Everything I have is black so it is nice to have a color this one has so I can find it. The top pad is real nice because all the weight is carried by it allowing the ear peaces to be adjusted easily. Would like have seen the mike that went with them.

                  (0 of 10 customers found this review helpful)

                   
                  2.0

                  old tech

                  By edacrowe

                  from Carlsbad, CA

                  About Me Experienced

                  Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

                  these headphones emulate the best in 70's technology. They are heavy. They are hot and make your head sweat. They are not efficient, so driving them with anything other than a very strong audio source results in a relatively quieter response. But it's 2014 and many great advances in earbud and headphone technology have evolved over the last 40 years. Buy something else.

                   
                  5.0

                  Professional Quality

                  By Audiolad

                  from Atlanta, GA

                  About Me Experienced

                  See all my reviews

                  Ask me a question

                  Pros

                  • Clear Sound
                  • Durable
                  • Versatile

                  Cons

                    Best Uses

                    • Home Studio
                    • Professional Recording

                    Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

                    Most talk about their wonderful sounding headphones and these do produce excellent sound. However, you notice the bolt on the side, that's what studio used to hang a voice mike. They isolate to allow a singer to listen to the track in his headphones and sing through the mike. My two pair are only 42 years old, so I can't really discuss quality. Frank Sinatra used these in the recording studio. Enough said.

                    (0 of 12 customers found this review helpful)

                     
                    1.0

                    NO GO

                    By Viking

                    from Texas

                    About Me Experienced

                    See all my reviews

                    Verified Buyer

                    Pros

                    • Easy To Use

                    Cons

                    • Poor Sound Quality
                    • Unreliable

                    Best Uses

                    • None

                    Comments about Koss PRO4AA Noise-Isolating Professional Studio Headphones:

                    I ordered these headphones because I owned a pair that I bought in the 70's. When they arrived I unpacked them and plugged them into my amplifier. I couldn't hear anything in the left earpiece. I tried them again plugging them into my stereo, still no sound in the left earpiece. I returned them and for a pair of Roland RH 300's.

                    Displaying reviews 1-17

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