Select the item on the page that has the error

Doprava zadarmo práve teraz! Nepremeškajte šancu ušetriť na vianočných darčekoch.

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 KSC / 21 (24 months warranty)

Headphones - for sports, 50-20,000Hz, sports design SportClip, dynamic deep bass changes
The product is localised for GB
Price incl. VAT
Price excl. VAT £11.58
In stock > 10 pcs
Hassle-free One-click buying using preset Shipping and Payment options.
Warranty 24 months Code:  JK417f Product Number:  KSC21
Helpdesk Print
Koss KSC / 21 (24 months warranty) £17.53 £13.90 In stock > 10 pcs
Rated by 56 users
5 20x
4 19x
3 11x
2 5x
1 1x
1 000+ Customers Purchased
69 % Customers Recommend

Koss KSC / 21 (24 months warranty)

around the ears Done!
Closed Done!
Without microphone Done!
connection type
3.5 mm Jack Done!
Cable length
1.2 m Done!
Cable routing
Bilateral (in both shells) Done!
Headphone characteristics
Frequency from
50 Hz Done!
Frequency to
18,000 Hz Done!
101 dB/mW Done!
32 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.
Was this information useful?
This form is for collecting Feedback Only. If you have any other inquiries, please our Customer Care team here.
Is something missing or displayed incorrectly? Let us know your suggestions so we can improve the website and customer experience.

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

Rated by 56 users
5 20x
4 19x
3 11x
2 5x
1 1x
1 000+ Customers Purchased
69 % Customers Recommend
Marek 03/03/2013
Translated by Google Translate

Regarding the store, flawless access to the following working day, the headphones at a branch. As soon as I came home (and almost with my finesse prestrihol cable to the jack -D), I threw them on the ears and I must say that compared to conventional štuplíkovým are incomparably more comfortable. While it is true that some portion of the sound leaking into the environment, etc., but I did not mind it at all. The sound is clean, but so what should be :-) For me - ordinary users - are perfect for no more severe odporúčam any higher model - however - it is not a Porta Pro -D So overall assessment - an ideal compromise between štuplíkovými and headphones via the head :-)
Much more convenient compared to traditional štuplíkovým quality sound Super Pomer design quality - price Practical gripping ears Skladnejšie compared to the headset over your head For current users priam perfect solution Not suitable for people with glasses -D case of extended listening (1-2 hrs.) After passing a little sore ears the sound of gas escaping into the environment
Karolína, České Budějovice 1 28/05/2013
Translated by Google Translate

nice sound when you squeeze the headphones to his ears (if you have them under the cap) Loosen the headphones from ear so the sound goes off and the music is poor (totally lose the bass) after a long time pushes the ears (especially when you put them over the cap, you have really heard) rolling out even worse than the traditional "corks"
Customer 25/02/2013
Translated by Google Translate

good product, Chyna select trade
kvalitne piling through alzu - problem with a lifetime warranty!
Jana, Dobříš 31/10/2013
Translated by Google Translate

Sound Rotary earhook
Marek 12/03/2013
Translated by Google Translate

Actually, no good sound gimmicky awkwardly gripping because they are odklápajú from the ears
good sound nedosadajú ears (if you do not use superglue :) problem of Lifetime warranty
Petr, Praha 15/02/2013
Translated by Google Translate

Although technically well-managed, ergonomically poor and listening exercises.
Very good sound quality Not abut the ears Half sound goes into the surroundings
Customer, Děčín 27 09/12/2013
Translated by Google Translate

Excellent, well sit on your ears nothing
Vít, Bílovice nad Svitavou 22/01/2013
Translated by Google Translate

Super sound, just Koss :) I can only recommend Slightly pushing the ears, but after a few hours of your ears get used :)
Firm, Bratislava 19/08/2014
Translated by Google Translate

nebolia ears even after prolonged use quality sound at ease "Leak" sound, but what is at such a type entirely clear
Martin, Prachatice 17/02/2013
Translated by Google Translate

Convenience, sounds great suggest
Review Koss KSC / 21 (24 months warranty)
Accessories for Koss KSC / 21 (24 months warranty)
Help others choose the best products...
Write a review
For shipping to other EU countries visit this page Koss KSC / 21 (24 months warranty). Für Versand nach Deutschland, besuchen Sie bitte Koss KSC / 21 (24 Monate Garantie). Chcete doručit zboží do Česka? Prohlédněte si Koss KSC/21 (24 měsíců záruka). Chcete doručiť tovar na Slovensko? Prezrite si Koss KSC/21. Für Versand nach Österreich, besuchen Sie bitte Koss KSC / 21 (24 Monate Garantie). Magyarországra történő kiszállításért tekintse meg ezt a termékoldalt: Koss KSC / 21 (24 hónap 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:

Why buy from us? We offer great payment options including PayPal & Bitcoin! More info »
Your personal assistant
Alza Premium
Rád pro vás zjistím stav objednávky či pomohu s výběrem zboží.
Napsat dotaz
Zavolejte mi
New conversation
We will call you and advise you professionally
+420 225 340 120
Order inquiry
Question about the product
Please enter your telephone:
Call me