# Audio adapter Tech-Protect TECH-PROTECT ULTRABOOST AU02 Bluetooth 5.4 AUX, Black

**URL:** https://aio.lv/en/product--tech-protect-5906302339815--12364527
**Data updated:** 2026-04-26 18:53 (EEST)
**Category:** Electronics Accessories
**Manufacturer:** Tech-Protect
**Manufacturer code:** 5906302339815
**EAN:** 5906302339815
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 9.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tech-protect-5906302339815--12364527

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

Tech-Protect ULTRABOOST AU02 is an AUX audio adapter with Bluetooth 5.4 connectivity designed to add wireless streaming to devices with a 3.5 mm AUX input. It enables playback from smartphones and other Bluetooth sources to car stereos, home speakers or wired headphones, offering simple pairing and compact black design for everyday audio use.

## Long description

Tech-Protect ULTRABOOST AU02 is an AUX audio adapter that adds Bluetooth 5.4 wireless streaming to devices with a 3.5 mm AUX input. Designed in a compact black housing, the adapter enables audio playback from smartphones, tablets and other Bluetooth sources to car stereos, home speakers or wired headphones. The product focuses on straightforward pairing, low-profile installation and maintaining wired device compatibility while providing the convenience of wireless audio transmission.
Advantages
The adapter supports Bluetooth 5.4 for improved connection stability and extended range compared with earlier Bluetooth versions, while its 3.5 mm jack preserves compatibility with a wide range of existing audio systems. Its compact form factor allows discreet placement in vehicles or near home audio equipment, and simple pairing procedures make it accessible for everyday use. The black finish integrates unobtrusively with most interiors and audio setups.
Suitable for
 Adding wireless audio streaming to car stereos with a 3.5 mm AUX input
 Connecting smartphones or tablets to wired home speakers
 Using modern Bluetooth sources with older wired headphones or amplifiers
 Temporary or portable setups where compact adapters are needed
When it may not be suitable
The adapter is intended to provide wireless input to devices that accept a 3.5 mm AUX connection; it does not replace systems that require digital inputs or specialized audio formats. It is not a Bluetooth transmitter for high-resolution multichannel audio systems and may not support advanced codecs beyond standard profiles supported by the device and the source. For setups requiring professional-grade signal processing or wired-only high-fidelity performance, a dedicated wired solution or higher-end digital interface may be more appropriate.
Key specifications
 Bluetooth version: 5.4
 Audio interface: 3.5 mm AUX (male)
 Color: Black
 Primary function: Wireless audio input to AUX-equipped devices
 Form factor: Compact adapter for in-line or near-device placement
How to use
Insert the 3.5 mm plug of the ULTRABOOST AU02 into the AUX input of the target device, such as a car stereo or speaker. Power the adapter if it requires charging or an external power source according to the manufacturer instructions, then enable Bluetooth on your smartphone or source device and search for available devices. Select the adapter from the Bluetooth list to pair; once paired, audio from the source will play through the connected AUX device. Adjust volume and playback from the source device or the connected system as needed.
What to consider before purchase
 Confirm your target device has a 3.5 mm AUX input for direct connection
 Check whether your audio source and the adapter support the codecs and profiles you need
 Consider power requirements—whether the adapter needs charging or an external power supply
 Assess expected connection range and in-vehicle or room placement for optimal reception
Usage recommendations
For best results, place the adapter where it has a clear line of sight to the Bluetooth source, avoid covering the unit with metal objects, and keep software on your source device up to date. When using in a vehicle, pair the adapter before driving to minimize distractions. Regularly check charging status if the adapter uses an internal battery.

## FAQ

### How much does the Tech-Protect ULTRABOOST AU02 Bluetooth 5.4 AUX adapter cost, and is it available for purchase?

The price is 10.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 254 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 19.06.2026 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 Tech-Protect 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 Tech-Protect 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/12364527/68345755_large.webp