Koss PRO/4AA PRO4AA

OUR PART #: PRO/4AA MFR #: 195728.101

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Koss Pro4AA headphones set the standard for full size professional headphones. ...Read more

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Koss PRO/4AA PRO4AA
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Product Overview

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.

Koss PRO4AA 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 with every recording
  • Durable steel and generously padded rubber headband
  • Adjustable slide bars ensure snug fit
  • 8ft coiled cord with 6.3 mm (1/4") plug

Koss PRO4AA Specifications:

  • Frequency Response: 10 Hz - 25kHz
  • Impedance: 250 ohms
  • Sensitivity: 95dB SPL/1mW
  • Cord: Coiled, Single Entry, 8ft

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Product Reviews

Reviewed by 11 customers
(10 are Verified Buyers.)

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MAURICE L on 08/09/2021 ✔ Verified - This reviewer has purchased this product

I use them everyday and the quality is unmatched.Very , very happy.

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Elias G on 07/31/2021

I am unspeakably happy these are available again. These are the headphones of which all others are pale imitations. They weigh a ton and squeeze your brains after a few hours, but slip Close to The Edge onto the turntable, turn it up to head-splitting volume, and travel back in time. I've been listening to Koss Pro/4a's since the 70s, and acquired my first Pro/4AA's for a whopping $4 at a yard sale in 1985. They have served me well. Time to retire the old pair and re-invest. You won't regret it.

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Sid H on 04/05/2021 ✔ Verified - This reviewer has purchased this product

I have been in radio for over 50 years. I have used Koss PRO4AA headphones for many many many those years. Perhaps since they were first offered. The fit tightly over my ears and I can crank them waaayyyyyyyyyyy up with no feedback while talking on the air. Love 'em!

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Kirk R on 11/22/2020 ✔ Verified - This reviewer has purchased this product

I used a pair of these back in the 1970s as a radio DJ. Today I'm back on the air and my new Pro 4AAs live up to the quality of my original set.... great phones!

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Dave C on 11/18/2020 ✔ Verified - This reviewer has purchased this product

When my vintage set of these died after 50 years, I was heartbroken until I found out that they're back in production to satisfy public outcry. One cannot find a better sounding pair of headphones unless one is prepared to spend many hundreds of dollars more, and only the most highly trained of audiophiles can tell the difference. These earphones are great! The "bang for the buck" can't be surpassed and I highly recommend them.

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Robert W on 11/18/2020 ✔ Verified - This reviewer has purchased this product

Awsome.They sound just as good as the first ones I got in 1977.

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Mary S on 06/19/2020 ✔ Verified - This reviewer has purchased this product

Good product. Great sound.

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Jamie M on 01/29/2020 ✔ Verified - This reviewer has purchased this product

Love these cans. Comfortable. Great sounding. They have some weight to them, which, to me, gives them a high quality feel. I don't expect to replace these any time soon (I think they'll last forever).

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Leroy T on 08/20/2019 ✔ Verified - This reviewer has purchased this product

Excellent just like I remembered them! Thank You Full Compass

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FRANK C on 01/15/2019 ✔ Verified - This reviewer has purchased this product

This is my second Koss PRO/4AA PRO4AA. I bought the first one in the '70s and I wore it out. I was very happy to see this product back in the market again and I bought a new one. Excellent product. One of the best headphones.

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