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Koss PRO / 4AAAT (24 months)

Headphones - Professional, closed
The product is localised for GB
Price incl. VAT £148.90
Price excl. VAT £124.08
Extended warranty + 1 year £14.89 Extended warranty + 1 year
Ordered on request within 4 days Watch Availability
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Warranty 24 months Code:  JK803a Product Number:  PRO/4AAAT Manufacturer's Website:
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Koss PRO / 4AAAT (24 months) £148.90 Ordered on request within 4 days
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Koss PRO / 4AAAT (24 months)

The professional headphones of the legendary KOSS company are suitable for home listening, or use in environments where there is a lot of disturbing noise from the neighborhood. The compromise is an unknown word for these headphones. High sensitivity and virtually no distortion, goes hand in hand with an excellent frequency range of 10Hz to 25khz. This guarantees a beautiful, and faithful, reproduction of music and sounds. The KOSS PRO/4AAAT offers a high speed drive that guarantees excellent mid, and high frequencies.

The PRO/4AAAT are rugged headphones that capture both flawless and sleek design. The closed design is perfectly insulated from surrounding bumps. The listener can then plunge into listening. This makes it suitable, for example, for listening in classrooms, or for sound engineers. The 3.5mm stereo jack connector is attached to the 2.5m long and twisted-pair cable. The package also includes a 6.3mm stereo jack.

Ear coupling
around the ears
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Without microphone
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connection type
3.5 mm Jack, 6.3 mm Jack
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Cable length
2.5 m
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Cable routing
Unilateral (in one shell)
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Headphone characteristics
Frequency out
10 Hz
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Frequency in
25,000 Hz
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98 dB/mW
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250 Ohm
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More Specifications

Legendary producer headphones KOSS was founded by John C. Koss in 1953 in Milwaukee. Reputation the company built steadily throughout the second half of the twentieth century. In 1969 headphones appearing in Air Force One. In the era of the Beatles, the company scores points with its Koss Beatlephone. Milestone occurred in 1989. The company introduced perhaps the most popular headphones of all time - Koss Porta Pro, which is unchanged nowadays. At the time, the quality of the products the company already well known. Yet all surprised by an unprecedented step taken in 1989. Even then, the legendary society was so sure of exquisite quality of its products that all of its products launched in exchange for a negligible fee absolute lifetime warranty that lasts to this day.

At present, headphones KOSS considered the best on the market. The offer is wide enough so your favourite portfolio to find musicians, gamers, athletes, travelers, students and everyone who needs or wants the best.

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Specifications can be changed without notice. Images are for illustrative purposes only. Retail Price (MSRP) means the manufacturer's/supplier's suggested retail price.

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