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Item # H82151

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Koss PRO4AA Noise-Isolating Professional Studio Headphones
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      Koss PRO4AA Noise-Isolating Professional Studio Headphones (H82151)
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      Koss PRO4AA Noise-Isolating Professional Studio Headphones (H82151)
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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.

Koss PRO4AA Noise-Isolating Professional Studio Headphones 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


Koss PRO4AA Noise-Isolating Professional Studio Headphones Specifications:

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


Koss PRO4AA Noise-Isolating Professional Studio Headphones

This Koss product has a Lifetime Limited Warranty which covers normal use by the initial user or purchaser of this particular Koss product. Koss hereby warrants only to the initial user or purchaser that this Koss product will be free of any defect in materials and workmanship for the life of the product. This warranty does not apply to any INITIAL USER OR purchaser who allows this product to be used by multiple PERSONS. This warranty is the sole and exclusive warranty for this Koss product and is in lieu of all other warranties (express or implied), including any warranty of merchantability or fitness for a particular purpose. The sole and exclusive remedies available to the initial user OR PURCHASER for any defects in materials or workmanship shall be the obligation of Koss, at its sole option, to either refund the purchase price of the Koss product, or repair or replace the non-functioning or defective Koss product provided it is returned to Koss in secure packaging together with a check for $6.00 ($7.00 Canadian) to our factory at 4129 N. Port Washington Ave, Milwaukee, WI 53212. If purchased outside the U.S. contact the local Koss Authorized Dealer for details. Koss reserves the right to replace any discontinued product with one of equal value. Koss shall not be liable for any loss, injury or damages to persons or property resulting from the use of this product or any failure of or defect in this product, nor shall Koss be liable to the initial user of this product or to any other person or entity for any general, special, direct, indirect, incidental, consequential, exemplary, punitive, or OTHER DAMAGES of any kind or nature whatsoever. The repair or replacement of any non-functioning or defective product or the refund of the purchase price, at Koss' option, shall constitute Koss' only liability to the initial user or purchaser, whether such liability is based on contract, tort, strict liability or otherwise. Some states may not allow the exclusion or limitation of damages set forth herein in which case the above language may not apply to you. This limited warranty gives you specific legal rights and you may also have other rights which may vary among states or provinces. If usage of this Koss product violates the guidelines of this limited warranty, Koss will repair the product and charge the purchaser for the cost of company time and materials.

Get your gear covered!

Now you can get added warranty protection for your new gear. Pro Coverage steps in where the manufacturer's "normal wear and tear" ends. Our PRO COVERAGE program offers you UPGRADED COVERAGE if your product ever fails!

Pro Coverage includes:

  • Accidental damage protection (new gear only)
  • Expedited Repair
  • Free Shipping (for returns or repairs)
  • 100% Coverage for Commercial Use
  • Extended Return Period
  • Extended Price Protection
  • No Lemon Guarantee
  • Free Transfer of Coverage to a new owner
  • Repair Costs Covered for up to 3 years from date of purchase
  • Repairs Can Be Authorized Toll-Free by Phone or the via the web
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