In a class by itself.
There are few stereophones of any kind that can match the full-bandwidth performance of the Koss Pro/4 AAA. That's because the Triple As oversized voice coil and extra large diaphragm reproduce recorded material with a lifelike intensity and minimal distortion never before avail able in dynamic stereophones.
With a frequency response from 10 Hz to 22 kHz, a highly efficient element and a perfect seal for low bass response to below audibility, the Triple A lets every note blossom to its fullest harmonic growth.
You'll hear so much more of your favorite music, you'll think you're listening to a whole new recording.
Unlike other stereophones, the ear cushions developed for the Pro/4 Triple A represent a breakthrough in both comfort and acoustical engineering. Through extensive studies on how stereophones are actually worn, Koss engineers were able to reduce lateral pressure with a direct contour Pneumalite® earcushion that not only offers soft pliable comfort, but also creates an ideal environment for minimizing the linear excursion of the driver. Thus, the driver is able to produce any volume level without distortion. So you'll hear all the fundamental and harmonic frequencies exactly as they were recorded.
In addition, Koss has designed a special Pneumalite® dual suspension headband that creates a feeling of almost weightlessness even over periods of extended listening. It makes wearing the Triple A's as pleasurable as listening to them.
Why not stop in at your audio specialist and see why the Koss Pro/4 Triple A belongs in a class by itself. Or write for our free, full-color catalog c/o Virginia Lamm. Better still, listen to a live demonstration of the incredible Sound of Koss with your favorite record or tape. We think you'll agree that when it comes to the Pro/4 AAA and other Koss Stereophones and CM loudspeakers: hearing is believing.
KOSS® stereophones / loudspeakers hearing is believing
KOSS CORPORATION, 4129 N Port Washington Ave. Milwaukee, Wisconsin 53212, International Headquarters: Milwaukee / facilities in Canada, France, Germany, Ireland, Japan
(Source: Audio magazine, Feb. 1979)
Also see: Koss Auditor headphones (ad, Oct. 1977)
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