---
product_id: 604534896
title: "Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System"
brand: "avantree"
price: "€ 643.85"
currency: EUR
in_stock: true
reviews_count: 5
category: "Avantree"
url: https://www.desertcart.hr/products/604534896-avantree-harmony-a1-auracast-multi-room-wireless-speaker-system
store_origin: HR
region: Croatia
---

# 100m wireless range Expandable multi-room sync 20W stereo output Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System

**Brand:** avantree
**Price:** € 643.85
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate every space with wireless harmony—because your sound deserves to roam free!

## Quick Answers

- **What is this?** Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System by avantree
- **How much does it cost?** € 643.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/604534896-avantree-harmony-a1-auracast-multi-room-wireless-speaker-system)

## Best For

- avantree enthusiasts

## Why This Product

- Trusted avantree brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Connectivity:** Stream effortlessly via Bluetooth, Optical, or AUX inputs for all your devices.
- • **Scalable Speaker System:** Start with 3 speakers and expand anytime to build your personalized immersive soundscape.
- • **Seamless Multi-Room Audio:** Fill your home or venue with perfectly synchronized sound across multiple rooms.
- • **Long-Range Wireless Freedom:** Enjoy stable Bluetooth and Auracast transmission up to 100 meters—cut the cords, not the vibe.
- • **Future-Proof Firmware Updates:** Unlock new features and improvements with easy over-the-air updates—stay ahead of the curve.

## Overview

The Avantree Harmony A1 is a versatile multi-room wireless speaker system featuring a transmitter and three speakers, delivering up to 20W stereo output with a robust 100-meter Bluetooth and Auracast range. Designed for seamless expansion, it supports Optical, AUX, and Bluetooth inputs, making it ideal for homes, small venues, and commercial spaces seeking synchronized background audio with future-ready firmware updates.

## Description

Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System | Expandable Setup for Stores and Small Venues, Optical and AUX, Bluetooth Audio Input : desertcart.co.uk: Electronics & Photo

Review: très bon produit - excellent produit rapport qualité prix, très facile à mettre en utilisation, son excellent
Review: Nope - The sound is very distorted. I’ve set the eq, reset the cashe, kept the phone close to the receiver.. I will return this product

## Features

- 【For Multi-Room Background Audio】Includes a transmitter and 3 speakers – designed for seamless music across rooms, ideal for homes, stores, restaurants, and small venues with consistent, shared sound.
- 【Firmware Update Reminder】Unlock new features and continuous improvements through firmware updates – including options like keeping the speaker powered on continuously for uninterrupted use.
- 【Expandable Auracast Speaker System】Add more Harmony A1 speakers or Auracast-enabled devices anytime – build a flexible multi-room system that grows with your space.
- 【Up to 100M Wireless Transmission】 Enjoy stable Auracast audio transmission up to 100 meters between the transmitter and speakers (range may vary depending on environment and obstacles).
- 【Bluetooth, Optical & AUX Input】Stream audio from your phone via Bluetooth (works best when your device is near the transmitter), or connect to TVs and media players using Optical or AUX.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0G3WNJ1M6 |
| Antenna Location | Music listening, parties, house gatherings, TV audio, office audio, and shared indoor sound. |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Audio output mode | Stereo |
| Best Sellers Rank | 1,262 in Portable Bluetooth Speakers |
| Bluetooth Range | 100 Metres |
| Box Contents | 1 * Optical Cable, AUX Cable, 1 * Power Charger, 1 * Transmitter with Charging Cable, 3 * Auracast Speakers with Charging Cables |
| Brand | Avantree |
| Brand Name | Avantree |
| Colour | black / black |
| Compatible Devices | Smartphone, Tablet, Laptop, Television |
| Connectivity Protocol | Bluetooth, Auracast, Optical, AUX |
| Connectivity technology | Auxiliary , Bluetooth, Optical |
| Control Method | Touch |
| Country of Origin | China |
| Customer Reviews | 3.4 out of 5 stars 13 Reviews |
| Is Waterproof | False |
| Item Dimensions D x W x H | 33D x 12.5W x 30.8H centimetres |
| Manufacturer | Avantree |
| Maximum Range | 100 Metres |
| Maximum Speaker Output Power (in watts) | 20 Watts |
| Model Name | Harmony A1 |
| Model Number | BTST-5309 |
| Model name | Harmony A1 |
| Mounting Type | Floor Standing |
| Mounting type | Floor Standing |
| Network Connectivity Technology | Auxiliary, Bluetooth, Optical |
| Number of Batteries | 3 Lithium Ion batteries required. (included) |
| Number of Items | 1 |
| Product Features | 1.Auracast Sync; 2. Expandable System; 3. Easy Setup |
| Product Warranty | Warranty - 24 months (product registration to cover first 12m return shipment cost) | Extensive Support: Chat, Email, Phone, Online Clinic, Video Tutorials, FAQ and Registration - avantree.com/support |
| Speaker Size | 31.09 Centimetres |
| Speaker Type | Portable Speaker |
| Speaker maximum output power | 20 Watts |
| Unit Count | 1.0 count |
| Warranty Type | Extended |
| Water Resistance Level | Water Resistant |
| Wireless Technology Type | Bluetooth |

## Product Details

- **Brand:** Avantree
- **Speaker maximum output power:** 15 Watts
- **Frequency response:** 20 KHz
- **Connectivity technology:** Bluetooth
- **Audio output mode:** Stereo
- **Mounting type:** Tabletop
- **Model name:** WSSP-5308
- **Speaker type:** Multimedia
- **Special feature:** Multi Room Audio
- **Recommended uses for product:** home audio enhancement, outdoor events, multi-room audio, wireless music streaming, party entertainment

## Images

![Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System - Image 1](https://m.media-amazon.com/images/I/81GYw2+BXbL.jpg)
![Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System - Image 2](https://m.media-amazon.com/images/I/616jfMPh7XL.jpg)
![Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System - Image 3](https://m.media-amazon.com/images/I/71UQwXhxOSL.jpg)
![Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System - Image 4](https://m.media-amazon.com/images/I/715W-W76nBL.jpg)
![Avantree Harmony A1 - Auracast Multi-room Wireless Speaker System - Image 5](https://m.media-amazon.com/images/I/71VBf2U-9dL.jpg)

## Available Options

This product comes in different **Set** options.

## Questions & Answers

**Q: What is Harmony A1 and who is it for?**
A: Harmony A1 is a wireless speaker system for indoor shared audio. It is ideal for homes, cafés, restaurants, meeting rooms, classrooms, retail spaces, and small gatherings. For outdoor events or loud parties, a higher-power system may be better.

**Q: How many Harmony A1 speakers can I connect?**
A: With Auracast, Harmony A1 can connect to unlimited compatible speakers or headphones from one transmitter. You can start with a small setup and add more speakers anytime as your multiroom audio needs grow.

**Q: Does Harmony A1 require Wi-Fi or an app?**
A: No. Harmony A1 works without Wi-Fi or an app. Connect your phone, computer, or other audio source to the transmitter, power on the speakers, and start listening.

**Q: Can I use Harmony A1 with TVs?**
A: Yes, but Harmony A1 is designed for shared room audio, not TV lip-sync listening. Since wireless transmission adds some delay, we do not recommend using it together with your TV’s built-in speakers.

**Q: What devices can Harmony A1 work with?**
A: Harmony A1 supports audio input through Bluetooth, Optical, and AUX (depending on transmitter model). It works with phones, laptops, tablets, media players, and other audio sources.

## Customer Reviews

### ⭐⭐⭐⭐⭐ très bon produit
*by M***L on 28 July 2026*

excellent produit rapport qualité prix, très facile à mettre en utilisation, son excellent

### ⭐ Nope
*by K***R on 3 July 2026*

The sound is very distorted. I’ve set the eq, reset the cashe, kept the phone close to the receiver.. I will return this product

### ⭐⭐⭐⭐ Works well over a distance of 75'
*by B***U on 19 August 2026*

Love this thing. The only issue I have with it is the lag time between the speaker talking and voice coming out of the speaker at the back of the sanctuary. Size is great, quality appears to be great, size is perfect for church and it's a nice looking system. Not too impressed with the mike though, feels lightweight. Don't know about the battery life as we have only had it in use for one week so far.

## Frequently Bought Together

- Avantree Harmony - Wireless Speaker System for Multiple Rooms & Outdoor Party, 1 Transmitter & 3 Portable Bluetooth Speakers with Separate Volume Controls, Scalable to 100 Multi Speakers
- Avantree Bluetooth & Multi-Room Add-On Speaker for Harmony Set

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**Shop now:** [https://www.desertcart.hr/products/604534896-avantree-harmony-a1-auracast-multi-room-wireless-speaker-system](https://www.desertcart.hr/products/604534896-avantree-harmony-a1-auracast-multi-room-wireless-speaker-system)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-09-10*