JR900 Wireless Headphones


Key Features:

  • Dual volume control provides convenient level and balance adjustment for customized sound
  • Headphone circuit contains microchip that automatically locks transmitter signal onto selected channel, preventing unwanted audio drift
  • Adjustable, padded, vinyl-covered headband offers maximum comfort during extended listening
  • Hassle-free transmitter recharging with a built-in battery recharge circuit
  • Transmitter allows listeners to switch between channels for cleanest, clearest reception
  • 5-channel capability makes the system perfect for commercial applications, as well as home use: multi-screen movie theaters, multicultural events, museums, educational programs, etc.
  • Covered under the Koss Stereophones Limited Lifetime Warranty
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Koss JR900s are the music lover’s answer to true stereo and cordless freedom. Operating on one of the highest power bands available on the market, the Koss JR900 headphone system (consisting of a high quality, battery operated RF transmitter with AC adapter) offers the best in wireless audio technology, allowing you to roam freely over a 70,000-square-foot area. From room to room, inside to outside, even in bright sunlight, you can move to your heart’s content without the need for additional transmitters or worry of signal breakup. 

No other radio frequency headphone system delivers the exceptional sound reproduction and extended frequency response as the JR900 wireless headphones: crisp highs and amazing bass response flowing through circumaural leatherette ear cushions – which enclose the ear for maximum isolation. An adjustable, padded, vinyl-covered headband fits nearly any head size and shape for optimal comfort. Oxygen-free copper voice coils transmit the clearest signal imaginable for the quality of deep bass and treble clarity that can only be called the Sound of Koss.


The heart of Koss’s wireless JR900 system is its transmitter. An interface that offers 5-channel capability, the JR900 transmitter allows listeners to easily switch from channel to channel for clean and clear reception. The channel select control makes hooking up additional transmitters to separate audio sources a breeze, enabling you to tune in to different audio programs on the JR900 cordless headphones.

  • 70,000-square-foot signal
  • Five stereo transmit channels
  • Circumaural leatherette ear cushions
  • Integral NiCad batteries with 5-10 hours charge time
  • Channel select control
  • Koss Limited Lifetime Warranty



Frequency Response 20-20,000 Hz
Impedance 10k ohms
Sensitivity User adjustable input level
Cord Cordless

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