# Headphones Koss PortaPro Stereophone

**URL:** https://aio.lv/en/product--koss-portrapro1--1074770
**Data updated:** 2025-12-29 05:35 (EET)
**Category:** Headphones
**Manufacturer:** Koss
**Manufacturer code:** PORTRAPRO1
**EAN:** 0021299147764
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 45.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 37.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koss-portrapro1--1074770

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The Koss PortaPro Stereophone Headphones are wired headphones designed for music lovers. They feature a frequency response of 15 - 25000 Hz, ensuring a wide range of sound. With a cable length of 2.4 m, they provide flexibility and comfort during use. Ideal for music enthusiasts seeking quality sound and durability.

## Long description

The Koss PortaPro Stereophone is a wired portable headphone that has preserved its original 1984 design and performance. It delivers a wide frequency response from 15 to 25,000 Hz and uses dynamic mylar elements, neodymium iron boron magnets and oxygen-free copper voice coils to reproduce sound accurately. The circumaural ear coupling, foam earcushions and a 2.4 m cable provide comfortable, flexible use for everyday listening, commuting or travel.
Advantages
The PortaPro offers a wide frequency range (15–25,000 Hz) and dynamic elements constructed from rigid mylar that reduce mechanical distortion for precise reproduction. Neodymium iron boron magnets increase output and clarity, while oxygen-free copper voice coils improve signal transmission. Foam earcushions create an open, hear-through sound that keeps the listener aware of surroundings, and the long 2.4 m wired connection adds placement flexibility.
Suitable for
 Casual and critical music listening
 Commuting and travel
 Use with portable players and home audio sources
 Work or activities where situational awareness is required
Key specifications
 Brand: Koss
 Model: PortaPro (MPN: PORTRAPRO1)
 Type: Wired circumaural headphones
 Frequency response: 15–25,000 Hz
 Cable length: 2.4 m
 Ear cushions: Foam, open/hear-through design
 Drivers: Mylar dynamic elements with neodymium iron boron magnets
How to use
Connect the 3.5 mm plug to your audio source or use an appropriate adapter if needed. Place the earcups over your ears so the foam cushions rest comfortably; adjust the headband for a secure fit. Start playback at low volume and increase to a comfortable listening level. Because the design provides an open sound, you will retain awareness of ambient noise while listening.
Usage recommendations
For best results use with portable players or home audio sources at moderate volume levels. Avoid exposure to moisture and store the headphones on a stand or in a case to preserve the foam cushions and cable. If using in noisy environments, increase source volume responsibly to protect hearing.

## Specifications

### Headphones

| Feature | Value |
|---|---|
| Headphone frequency | 15 - 25000 |
| Headphone sensitivity | 101 dB |
| Impedance | 60 Ω |
| Ear coupling | Circumaural |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wired |

### Performance

| Feature | Value |
|---|---|
| Cable length | 2.4 m |
| Recommended usage | Music |
| Product type | Headphones |

### Microphone

| Feature | Value |
|---|---|
| Microphone type | Not available |

## FAQ

### How much does the Headphones Koss PortaPro Stereophone cost, and is it available for purchase?

The price is 45.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 200 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 02.07.2026 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. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: ear coupling, connectivity technology, cable length, 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.

## Image

https://aio.lv/img/cache/product/1074770/62258986_large.webp