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PRO4AA Koss PRO4AA Full-Size Studio Headphones - Premium Sound

US $102.48
or 4 interest-free payments of $25.62 available with
Condition:
New
28 available3 sold
People are checking this out. 4 have added this to their watchlist.
Breathe easy. Returns accepted.
Shipping:
Free UPS Ground.
Located in: US, United States
Delivery:
Estimated between Tue, May 27 and Fri, May 30 to 94104
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Returns:
30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
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eBay item number:256767195514
Last updated on May 06, 2025 11:13:20 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
UPC
013039346407
Brand
Koss
Type
Ear-Cup (Over the Ear)
Color
Beige
MPN
PRO/4AA
Features
Adjustable Headband, Noise Isolation

About this product

Product Information

Experience professional quality stereophonic sound with the Koss PRO-4AA designed for broadcast and recording. The durable steel head band of these Koss stereophonic headphones is well padded for comfortable long time use. Offering you exceptional wide frequency range of 10 - 25,000 Hz, these over-the-head headphones deliver outstanding sound quality. The heavy-duty ten-foot coiled cord of the Koss PRO-4AA allows for easy flexibility of movement while recording or listening. These Koss stereophonic headphones include mic mount hardware for a complete versatility in usage. Enjoy high-fidelity performance and maximum bass and isolation by wearing these over-the-head headphones.

Product Identifiers

Brand
Koss
MPN
PRO/4AA
Model
PRO4AA
eBay Product ID (ePID)
114539003

Product Key Features

Color
Beige
Features
Adjustable Headband, Noise Isolation
Type
Ear-Cup (Over the Ear)

Additional Product Features

Brand Color
Beige
Suited for
Consumer Headphones
Connector(s)
6.3mm (1/4in), 3.5mm (1/8in)
Impedance
250ohm
Maximum Frequency
25
Number of Earpieces
Ear-Cup (Over the Ear), Headband
Sensitivity
95dB
Minimum Frequency
10

Item description from the seller

About this seller

AztekWholesale

100% positive feedback•3.9K items sold

Joined Dec 2015
Aztek Computers is a leading provider of technology products and services. We help individuals, businesses, government and educational institutions worldwide in identifying, procuring and installing ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.8
Reasonable shipping cost
4.9
Shipping speed
4.9
Communication
5.0

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Seller feedback (678)

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    • h***r (438)- Feedback left by buyer.
      Past 6 months
      Verified purchase
      Excellent headphones. Arrived as described.
    • e***6 (2507)- Feedback left by buyer.
      Past 6 months
      Verified purchase
      Excellent seller!! Great price, fast shipping!! Would buy from them again!!
    See all feedback

    Product ratings and reviews

    Learn more
    4.5
    64 product ratings
    • 52 users rated this 5 out of 5 stars
    • 3 users rated this 4 out of 5 stars
    • 4 users rated this 3 out of 5 stars
    • 1 users rated this 2 out of 5 stars
    • 4 users rated this 1 out of 5 stars

    Good sound quality

    Comfortable

    Lightweight

    Most relevant reviews

    See all 51 reviews
    • by jruf8197
      Oct 24, 2017Top favorable review

      Old school enclosed headphone

      If you are into an old school fully enclosed headphone it's difficult to beat this pair. This is a sturdy time tested design has been around since the 1970s. It produces a smooth and accurate sound while eliminating a great deal of outside noise distractions. These do not feel like a modern light headphone they are a bit heavier due to the solid construction and oldschool design. This aspect is a big part of their charm. The 250 ohm rating does require you to turn the output up quite a bit more than you would on other headphones. This aspect does not detract from the good sound quality it just means you need to use more energy to drive the headphone. Play back at low volume may seem a bit lacking, however at mid and high volume you receive a rich full sound. Sturdy construction with a ...

      Verified purchase: YesCondition: NewSold by: boxybay_deals

    • by sdecker3bcm
      Apr 27, 2016Top critical review

      Times have changed

      These were my first 'real' headphones from 1974-1979. Even with moderately-priced Japanese electronics of the era, they sounded amazing in my late-teen years. I sold them in 1979 for AKG K240 Sextetts. I haven't heard them since then until I decided to hear my old reference in early 2016. I have every reason to believe the Pro4AA I bought from eBay are in good shape sonically and all-around, and built sometime in the '70s. They have the vice grip clamp on my head and ears and are very heavy by today's standards, which I expected. I didn't expect the sound was so, uh, colored, nor do I remember it being so much so. A huge upper-bass emphasis ~300Hz, still-strong bass below there, that render mids and treble way into the background. And this is using equipment that is far more ...

      Verified purchase: YesCondition: Pre-OwnedSold by: trotter1wo

    • by gtodc542015
      Feb 10, 2017

      The GREATEST studio headphone ever created!

      There is not a lot that needs to be said. How do you describe the best stereo headphone ever manufactured. I could write for a solid hour about the frequency response, sound quality, low distortion rating, etc, etc. But instead of boring you with technical jargon, all I will say is buy 'em, try 'em and you will be in stereo ecstasy! Whether you dig classical, rap, country, metal, classic rock, jazz, whatever you listen to, these are the greatest sounding headphones ever made! They have been the standard of MANY recording studio engineers for decades! Buy a pair and you will QUICKLY see why!

      Verified purchase: YesCondition: Pre-OwnedSold by: crazydealsllc

    • by fenderman375
      Jan 16, 2019

      good isolation, great sound

      I needed a good set of isolation headphones to use when I'm practicing on my drum set to cds. Works great. Great sound and isolation. I have used Koss phones in the past, never disappointed in the quality or the sound!

      Verified purchase: YesCondition: NewSold by: *alcam0*

    • by kpatstone-2012
      Sep 05, 2018

      Thanks for making these headphones again !!

      I bought these headphones to replace a pair that I sold to a friend years ago. Koss is a very good brand and the sound quality is just great.

      Verified purchase: YesCondition: NewSold by: mygoods

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