Headphones Koss Porta Pro

Name: Headphones Koss Porta Pro KOSSPORTAPRO
Brand: Koss
SKU: 1058327
Price: 50.49 EUR
Availability: InStock

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Short description

The Koss Porta Pro headphones are wired and designed for music lovers. They feature a frequency range of 15 - 25000 Hz, ensuring high-quality sound. With a cable length of 1.2 m and a lightweight design at just 79 g, they provide comfort and portability. Available in black and silver, these headphones are perfect for on-the-go listening.

Available for order: 70 pcs.

Warranty: 2 Years

SKU: 1058327

Manufacturer: Koss

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Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

22.10.2026 {{selectedOffer.officeDeliveryString}}

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Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

27.10.2026 {{selectedOffer.courierDeliveryString}}

From 4.99 € (Weight: 0.08 kg)

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From 1.99 €

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Payment Methods:

Bank transfer, Bank cards on-line, Apple Pay, Google Pay

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Product information

Description

The Koss Porta Pro is a wired supra-aural headphone designed for personal and portable listening. Introduced in 1984 and preserved in its original form, the Porta Pro delivers a wide frequency response of 15–25,000 Hz, lightweight construction and a 1.2 m cable for everyday use. Its mylar dynamic elements, neodymium magnets and oxygen-free copper voice coils are engineered to reproduce clear, accurate sound with pronounced bass and sufficient volume for noisy environments. Foam ear cushions provide an open, hear-through experience while keeping the headphones comfortable for travel, commuting and active use.

Advantages

The Porta Pro combines a long-standing proven design with materials that reduce mechanical distortion and improve signal transmission, resulting in detailed sound reproduction and strong low-frequency performance. Its lightweight build and supra-aural fit make it easy to wear for extended periods, and the 1.2 m wired connection offers reliable playback without battery dependence. Available in black and silver, the model balances portability, comfort and sound clarity for everyday listening.

Suitable for

Commuting and public transport
Travel and portable music players
Casual home listening and movie playback
Light exercise such as running or walking

Key specifications

Frequency response: 15–25,000 Hz
Connectivity: Wired
Ear coupling: Supra-aural
Cable length: 1.2 m
Weight: 0.079 kg
Colours: Black, Silver
Model / MPN: KOSSPORTAPRO
EAN: 021299147764

How to use

Connect the 3.5 mm plug to your audio device and place the supra-aural pads over your ears. Adjust the headband for a comfortable fit so the foam ear cushions sit lightly on the ears to allow some ambient sound through. Use device volume controls to set listening level; the Porta Pro's neodymium magnets provide sufficient output for typical portable players. When not in use, fold or store the headphones in a protective case or pouch to prevent cable damage.

Usage recommendations

For best performance, avoid exposing the headphones to moisture and extreme temperatures. Clean the foam ear cushions gently with a dry cloth and disconnect the cable from the source when storing. If using in noisy environments, increase device volume moderately to preserve audio detail without risking hearing discomfort.

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
Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.: Wired
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
Product colour: The colour e.g. red, blue, green, black, white.: Black, Silver

All features

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.: 0.079 kg

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

Total Harmonic Distortion (THD): Total harmonic distortion is a measure of non-linear harmonic distortion and is given in %. Non-linear harmonic distortions are signals which were not present in the original before the signal was converted by the headphones. These unwanted signals are caused by the diaphragm, whose movements do not precisely move in time with the electric signals that cause it to move. Unfortunately, this is a feature of all electroacoustic transducers. Although it cannot be completely eliminated, suitable steps can be taken to minimise it. However, the user is not interested in why this distortion takes place but in how great the level of distortion must be for it to become perceptible. According to the findings of several research projects, a total harmonic distortion of 1% in the frequency range of 100 to 2000 Hz is imperceptible. Below 100 Hz, the perceptibility threshold lies at 10%.: 0.2 %
Driver unit:: 3.5 mm
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.: 60 Ω
Headphone frequency: The range of frequencies (low to high sounds) that the headphones can produce.: 15 - 25000
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

Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.: Wired

Performance

Cable length: How long the cable is.: 1.2 m
Product colour: The colour e.g. red, blue, green, black, white.: Black, Silver
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

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Customer questions

FAQ

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

The price is 50.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 70 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 22.10.2026 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: 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, connectivity technology, recommended usage, product type, product colour, 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

Headphones Koss Porta Pro

Short description

Product information

Description

Advantages

Suitable for

Key specifications

How to use

Usage recommendations

Specifications

Weight & dimensions

Microphone

Headphones

Ports & interfaces

Performance

Description

Similar products

Product comparison

Customer reviews

Customer questions

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

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

What payment options are available?

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

What is the warranty period?

Can the product be returned after purchase?

Where should I contact for warranty service?

How can I tell if this product suits my needs?