We use cookies to give you the best possible experience on our site. By continuing to use the site you agree to our use of cookies. Find out more

Koss PRO4 / S Full Size (lifetime)


Hello, my name is Brook and I would like to apologise that this product is not fully translated. I am working hard to remedy this. Would you like to help?

Headphones Collapsible, 10Hz - 25kHz, 35Ohm impedance, 99dB sensitivity, removable cable and portable case
The product is localised for GB
incl. VAT £187.90
excl. VAT £156.58
Extended warranty + 1 year £18.79 Extended warranty + 1 year
Return products within 60 days £9.40 Possibility to return products within 60 days
Ordered on request within 4 days Watch Availability
Hassle-free One-click buying using preset Shipping and Payment options.
Warranty 24 months Code:  JK124f Extended Warrant +75 months Product Number:  PRO4SB
Helpdesk Print
Koss PRO4 / S Full Size (lifetime) £187.90 Ordered on request within 4 days

Koss PRO4 / S Full Size (lifetime)

The Koss PRO4 / S Full Size Earphones are designed for music professionals . They reproduce accurate and undistorted sound, making them suitable for study and creative environments. Robust design and durable materials make this model a tasteful design. 

Main advantages:

  • Effective noise isolation from the environment
  • Valuable materials
  • Closed ear pads with perfect sealing create the perfect audio backdrop
  • Folding construction

Uninterrupted reproduction

The earphones are equipped with D-shaped earphones that copy the ear shape. They isolate the sound from the surroundings and result in the surrounding surround sound. Aluminum shells contain memory foam that is wrapped in soft skin. This combination is signed on strength of construction and comfort when wearing. Similarly, there is a head bridge whose metal base is covered with a breathable foam. It is suitable for longer wear without signs of discomfort.

Removable cable

The Pro4S headphones are equipped with a detachable cable with the option to connect it to the shell. In this case, the output of the second connector becomes an output that allows, for example, chaining. When transported, you will also appreciate their folding design and also the storage case that is included in the package.

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

Online chat

Dear customer, your question you can send us a message via the contact form here, respectively. you can solve your query online using chat. If you want to use the chat log , please.

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

There are no posts in this discussion.
Accessories for Koss PRO4 / S Full Size (lifetime)
Help others choose the best products...
Write a review
For shipping to other EU countries visit this page Koss PRO4 / S Full Size (lifetime). Chcete doručit zboží do Česka? Prohlédněte si Koss PRO4/S Full Size (doživotní). Chcete doručiť tovar na Slovensko? Prezrite si Koss PRO4 / S Full Size (doživotné). Für Versand nach Österreich, besuchen Sie bitte Koss PRO4 / S Full Size (Lifetime). Magyarországra történő kiszállításért tekintse meg ezt a termékoldalt: Koss PRO4/S Full Size (életre szóló garancia).

Link to Manufacturer's Website: Enter link to the external review

Note (link, Part number etc.):

My Alza Log In Shipping & Payment About Us
Shipping to: