# Wired Headset A4Tech B140N with USB connection and adjustable microphone

**URL:** https://aio.lv/en/product--a4tech-a4tkla47114--10489376
**Data updated:** 2026-03-07 15:20 (EET)
**Category:** Keyboards
**Manufacturer:** A4Tech
**Manufacturer code:** A4TKLA47114
**EAN:** 4711421979146
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.49 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 19.41 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--a4tech-a4tkla47114--10489376

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Wednesday | free |
| Pickup points | 15.06.2026 | 1.99 EUR |
| Courier delivery to door | 15.06.2026 | 4.99 EUR |

## Summary description

A4Tech B140N wired headset with USB connection and adjustable microphone, designed for clear voice communication and multimedia use. The headset connects via USB for plug-and-play operation, while the adjustable boom mic allows positioning for optimal sound pickup. Suitable for remote work, online meetings, VoIP calls and general computer audio tasks.

## Long description

The A4Tech B140N wired headset with USB connection and adjustable microphone provides a practical audio solution for voice communication and multimedia use. The headset uses a USB connector for plug-and-play operation with most modern computers and offers an adjustable boom microphone to position the capsule for clear voice pickup. Its design focuses on straightforward connectivity and reliable speech transmission for remote work, online meetings and VoIP calls.
Advantages
The USB connection eliminates the need for separate audio jacks and enables easy setup on Windows and other systems that support USB audio. The adjustable microphone boom lets users place the microphone near the mouth to reduce background noise and improve speech clarity. Lightweight on-ear cups and a simple headband provide comfortable, all-day wear for extended online sessions, while wired power ensures stable audio without battery dependency.
Suitable for
Remote work and home offices
Online meetings and video conferencing
VoIP and softphone calls
Language learning and online tutoring
General computer audio and multimedia playback
Key specifications
Connection type: USB plug-and-play
Microphone: adjustable boom microphone for directional voice pickup
Form factor: wired headset with on-ear cups and headband
Compatibility: standard USB audio support for desktops and laptops
Power: bus-powered via USB (no batteries required)
How to use
Connect the USB plug into an available USB port on your computer. The operating system should detect the headset automatically and select it as an audio input/output device; if needed, choose the headset in system sound settings or in your communication app's audio preferences. Adjust the microphone boom so the capsule is positioned close to the corner of your mouth, angled slightly to avoid breath noise. Set the input volume in the system or application to achieve clear voice levels without clipping.
Usage recommendations
For best voice quality, keep the microphone within 1–3 cm of the mouth and avoid direct breath onto the capsule. Use the headset with the latest audio drivers and verify device selection in conferencing software before starting calls. Store the headset in a dry place and avoid excessive tension on the cable to prolong service life.

## FAQ

### How much does the Headset A4Tech B140N USB adjustable microphone cost, and is it available for purchase?

The price is 23.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 115 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 Wednesday 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 A4Tech 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 A4Tech 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

## Image

https://aio.lv/img/cache/product/10489376/59773314_large.webp