{{ totalProductsCount }}
In cart {{totalProductsCount}} item(s)

In cart {{totalProductsCount}} item(s)

Total:
{{sum | formatAmount}}

Your cart is empty

header-product Headphones Koss KSC21
11.99 €
Minimum search length 3 characters
{{searchQuery.text}}
{{shortcut.title}}
{{searchString}} → {{searchInCategorySuggest.title}}
{{category.title}}
{{category.path}}
AiO.lv Computer Components Computer Peripherals Headphones Koss

Headphones Koss KSC21

Fast shipping
Headphones Koss KSC21 Photo 1
Headphones Koss KSC21 Photo 1
Headphones Koss KSC21
11.99 €
Keep track of price changes You keep track of price changes
Watch the price drop

Leave your address - as soon as the price of the product goes down, you'll know about it right away

You keep track of price changes

Headphones Koss KSC21

{{email}}
You keep track of price changes

Headphones Koss KSC21

{{email}}
{{selectedOffer && selectedOffer.price | formatAmount}}

Short description

The Koss KSC21 headphones feature a neck-band design, ideal for music lovers. With a frequency range of 50 - 18000 Hz, they deliver clear sound quality. The 1.2 m cable provides flexibility and comfort during use, making them perfect for everyday listening.
Available at price 11.99 €: 1 pcs.
Total available for order: 2 pcs.
Warranty: 2 Years
SKU: 1218861
Manufacturer: Koss
Learn more
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.79 €

Deliver

{{selectedOffer.parcelStationDeliveryString}}

All delivery methods Hide details
Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
Thursday {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
04.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.04 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
04.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.79 €
More about delivery methods
payment
Payment Methods:
Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay
More about payment methods
Together cheaper
{{product.price | formatAmount}}
{{product.title}}
{{productBundle.reference.specialPrice | formatAmount}}
{{productBundle.title}}
{{productBundlePreviousPrice | formatAmount}}
{{productBundleSpecialPrice | formatAmount}}

You saving {{productBundleYouSave | formatAmount}}

Product information

Description

Headphones Koss KSC21 feature a neck-band (behind-the-ear) wearing style with supraaural ear coupling and a 1.2 m cable. They have a frequency response of 50–18,000 Hz, 36 Ohm impedance and 101 dB sensitivity, and use a 3.5 mm connector for compatibility with standard audio devices.

Advantages

These Koss KSC21 headphones offer a wide frequency range suitable for most music and media, medium impedance that pairs well with smartphones and portable players, and relatively high sensitivity for audible output at lower power. The 3.5 mm connector and 1.2 m cable provide broad compatibility and comfortable reach for everyday use.

Suitable for

  • Listening to music on smartphones and tablets
  • Use with laptops and portable audio players
  • Everyday on-the-go or at-home listening where a neck-band design is preferred

Key specifications

  • Frequency response: 50–18,000 Hz
  • Impedance: 36 Ohm
  • Sensitivity: 101 dB
  • Connector: 3.5 mm
  • Wearing style: Neck-band (behind-the-ear)
  • Ear coupling: Supraaural
  • Cable length: 1.2 m

How to use

Place the neck-band behind your head so the supraaural earpieces rest comfortably on your ears. Insert the 3.5 mm plug into the audio jack of your device. Before playing audio, set the device volume to a low level and increase gradually to a comfortable listening level to avoid sudden loud sound and protect hearing. Compatible devices include smartphones, tablets, laptops and portable audio players with a 3.5 mm output.

Usage recommendations

Use with devices that support a 3.5 mm output and avoid exposing the headphones to moisture, strong impact or extreme temperatures to prolong service life.

Specifications

Microphone type: The characteristics of the microphone bulit into the device in terms of the reception of signals from all or just one direction, i.e. omnidirectional (better for concerts and the like vs unidirectional, more suitable for voice recording.
Not available
Ear coupling: Ear coupling describes the way in which headphones or earphones stay attached to, or inside, the ear. There are three common types of ear coupling: circumaural, supra-aural and intra-aural. Circumaural headphones enclose your ears with large pads that suppress external noise. Supra-aural headphones are typically more lightweight and sit on top of the ears with small pads. Intra-aural headphones come in two basic designs and neither style sits on the head itself. The first are ear buds, which sit just outside of the ear canal, on top of your ear lobes. The second type is actually inserted directly into the ear canal and offers some external noise suppression.
Supraaural
Recommended usage: What the product should be used for, and how it should be used (e.g. ambient temperature).
Music
Product type: The sub-category of the product.
Headphones
Wearing style: The way in which the device is worn.
Neck-band
All features

Microphone

Microphone type: The characteristics of the microphone bulit into the device in terms of the reception of signals from all or just one direction, i.e. omnidirectional (better for concerts and the like vs unidirectional, more suitable for voice recording.
Not available

Headphones

Headphone sensitivity:
101 dB
Impedance: The effective resistance of an electric circuit or component to alternating current, arising from the combined effects of ohmic resistance and reactance.
36 Ω
Headphone frequency: The range of frequencies (low to high sounds) that the headphones can produce.
50 - 18000
Ear coupling: Ear coupling describes the way in which headphones or earphones stay attached to, or inside, the ear. There are three common types of ear coupling: circumaural, supra-aural and intra-aural. Circumaural headphones enclose your ears with large pads that suppress external noise. Supra-aural headphones are typically more lightweight and sit on top of the ears with small pads. Intra-aural headphones come in two basic designs and neither style sits on the head itself. The first are ear buds, which sit just outside of the ear canal, on top of your ear lobes. The second type is actually inserted directly into the ear canal and offers some external noise suppression.
Supraaural

Ports & interfaces

3.5 mm connector:
Yes

Performance

Cable length: How long the cable is.
1.2 m
Recommended usage: What the product should be used for, and how it should be used (e.g. ambient temperature).
Music
Wearing style: The way in which the device is worn.
Neck-band
Product type: The sub-category of the product.
Headphones
Hide Show all

Description

Machine translation. Load original

Similar products

{{product.title}} Show details Hide details

{{highlightedFeature.featureTitle}}:

{{getProductFeatureValueById(product, highlightedFeature.featureId)}}

{{product.price | formatAmount}}
Might be useful
{{product.manufacturerName}}
{{product.categoryName}}
{{product.title}}
{{product.specialPrice}}
{{product.price}}
Stock data
Warehouse Stock Delivery to the store Store Price
BT5 1 Thursday Best delivery
Fast shipping
11.99 € Best price
WH353 1 11.08.2026
14.49 €
Fast shipping
11.99 €
Stock: 1
Delivery Date: Thursday Best delivery
Warehouse: BT5
14.49 €
Stock: 1
Delivery Date: 11.08.2026
Warehouse: WH353

Customer reviews

Show all reviews

Customer questions

FAQ

How much does the Headphones Koss KSC21 cost, and is it available for purchase?

The price is 11.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Thursday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Koss products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Koss service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: microphone type, ear coupling, recommended usage, product type, wearing style, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.
Show all questions
{{totalProductsWishes}} {{totalProductsCompare}} {{totalProductsCount}}
We respect your privacy
We use cookies to ensure the full operation of our store. The information associated with cookies is not used to personally identify you, and the files themselves are stored on your device, under your control. Cookies are not used for purposes other than those stated in our Privacy policy. By continuing to use our site, you agree to the use of essential cookies. If you do not agree, please, leave this site.
We use cookies
Show info
We respect your privacy
We use cookies to ensure the full operation of our store. The information associated with cookies is not used to personally identify you, and the files themselves are stored on your device, under your control. Cookies are not used for purposes other than those stated in our Privacy policy. By continuing to use our site, you agree to the use of essential cookies. If you do not agree, please, leave this site.
Which cookie files we use?

The necessary technical cookies allow you to use the basic functions of the store, such as page navigation, ordering, access to secure sites and more. The site cannot function properly without these files.

Preferences cookies are used to save information that changes how the site works and looks.

Static cookies are used in order to help the sites owner understand how the users are interacting with the site.

Marketing cookies are used in order to track a users movements throughout the site in order to show interesting and relevant ads to the specific user.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
shipping
Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
payment
Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.