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Koss PRO4 / S Full Size (24 months)

Headphones folding, 10Hz - 25kHz, impedance 35Ohmů, sensitivity 99 db, with a detachable cable and a carrying case
The product is localised for GB
Price incl. VAT £142.90
Price excl. VAT £119.08
Extended warranty + 1 year £14.29 Extended warranty + 1 year
Ordered on request within 7 days Watch Availability
Hassle-free One-click buying using preset Shipping and Payment options.
Warranty 24 months Code:  JK124e Extended Warrant +75 months Product Number:  PRO4SB
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Koss PRO4 / S Full Size (24 months) £142.90 Ordered on request within 7 days

Koss PRO4 / S Full Size (24 months)

Headphones around your ears Koss PRO4 / S Full Size are designed for professionals who deal with making music. Produce accurate and undistorted sound, and so are suited to the studio and creative environment. Robust design and durable materials complete the very tasteful design of this model.

The main advantages:

  • Effective noise isolation from the environment
  • Valuable materials
  • Closed ear pads with a perfect seal creates a perfect audio backdrop
  • Folding design
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Uninterrupted reproduction

The headphones are equipped with a D-shaped cushions, which follow the shape of the ear. Isolate the sound from the environment and as a result the surrounding background noise. Aluminum shells comprise a memory foam which is packed in a soft leather. This combination is signed for structural strength and comfort. So do i headband, whose metal base is coated with a breathable foam. It is suitable for prolonged wear without any signs of discomfort.

Detachable cable

Pro4S headphones are equipped with a detachable cable options to which mussels attach it. In this case, the second connector becomes an output which allows chaining example. When transferring'll also appreciate their collapsible construction and storage pouch, which is part of the package.

Ear coupling
around the ears
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Without microphone
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connection type
3.5 mm Jack
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Cable length
1.4 m
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Cable routing
Unilateral (in one shell)
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Headphone characteristics
Functions and Features
folding design, A detachable cable
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Frequency out
10 Hz
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Frequency in
25,000 Hz
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99 dB/mW
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35 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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