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Pro4AA Stereo Headphones

RetailkingBusiness
(23495)
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US $164.78
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List price US $313.08 (47% off)What does this price mean?
Recent sales price provided by the seller
$148.30 with coupon code
as low as $28.59/mo with
Condition:
New
5 available

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Located in: Haltom City, Texas, United States
Delivery:
Estimated between Fri, Jul 25 and Tue, Jul 29 to 94104
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eBay item number:167331278740
Last updated on Jul 23, 2025 06:58:35 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Model
N/A
Connectivity
N/A
Wireless Technology
N/A
Form Factor
N/A
Microphone Type
N/A
Suitable For
N/A
UPC
021299102725
Brand
Koss
Type
Ear-Cup (Over the Ear)
Color
Beige
MPN
PRO/4AA
Features
Adjustable Headband, Noise Isolation
Category

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

RetailkingBusiness

98.6% positive feedback•141K items sold

Joined Jan 2020
Usually responds within 24 hours
RetailKing is the global destination for ecommerce. We ship our products worldwide to any country. Ask us about our quick & affordable international shipping program.
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Detailed seller ratings

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

Seller feedback (26,542)

All ratings
Positive
Neutral
Negative
  • 9***r (4)- Feedback left by buyer.
    Past month
    Verified purchase
    Top quality product. I had to return because daughter gave us one from her apt.The return as just as good as Amazon. Listed the reason for the return, seller emailed a fed ex prepaid return, took the package to a fed ex location and off it went. I highly recommend this seller, this person lives up to the description of the product and a total hassle freed return. Exceptional seller.
    GE Profile Opal 2.0, Chewable Crunchable Countertop Nugget Ice Maker (#166967085769)
  • d***e (53)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    I recently made a purchase from this seller, and I couldn’t be happier with my experience! The item arrived quickly with prompt shipping, and the packaging was incredibly secure, ensuring everything was in good condition. The quality item was as described, with vibrant colors and meticulous details that matched the listings perfectly. The value for the quality and uniqueness of this collectible is outstanding. I highly recommend this seller for anyone looking for great items and a smooth tran
    Owlet Dream Sock - Smart Baby Monitor - Foot Sensor to Track Heartbeat - MINT (#166480258782)
  • 2***t (957)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    I had a problem when the package arrived. There was no charging cord. All I did was email the company back and explain to them. I did not have one. The company was fantastic. They did not hesitate and they saw to it as fast as possible. A charging cord would be sent to me. I think that is great for a company to look at its customers in such a way.
    SHARK FLEXBREEZE CORDLESS FAN PEDESTAL TO TABLETOP CAPABILITIES UH205 - GRAY (#167024712738)
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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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