<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3

<tc>Harmony</tc> A3

Auracast Bluetooth 5.4 Transmitter/Receiver Set, One-to-Many Speaker System, 328ft Range

$209.99
Subtotal: $209.99

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Product Highlights
  • Upgrade Speakers with Auracast Streaming
    Convert your existing speakers into an Auracast-enabled system. Broadcast your audio to multiple receivers at the same time for wide-area speaker coverage.
  • 100m Coverage for Large Venues
    Enjoy stable transmission up to 100m / 328 ft. Ideal for churches, halls, classrooms, gyms, and other venues with up to 500 seats.
  • Expandable System – Add More Receivers
    Includes three speaker receivers and supports unlimited expansion. Add extra receivers to cover more rooms, speakers, or larger spaces as needed.
  • Bluetooth / OPT / AUX Input
    Stream audio to the transmitter directly from your phone or laptop via Bluetooth. You can also connect TVs, mixers, or media players using Optical or 3.5mm AUX.
  • Secure & Future-Proof Design
    Protect your broadcast with password and custom name options. Powered by a Qualcomm chipset and supports DFU firmware upgrades for long-term reliability.
Specifications
Setup & Support
<tc>Harmony</tc> A3

<tc>Harmony</tc> A3

$209.99
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3
<tc>Harmony</tc> A3

<tc>Harmony</tc> A3

$209.99
Avantree Auracast Ecosystem Desktop

Specifications

🔄 Set
Wireless Connectivity Bluetooth 5.4 (Auracast)
Audio Latency Auracast LC3: approx. 50–70 ms
Bluetooth Profiles Classic Bluetooth Audio (A2DP, AVRCP) + Auracast Broadcast & Receiver (PBP, TMAP)
Audio Input Options Optical (TOSLINK), 3.5 mm AUX, Bluetooth
Recommended Range • Transmitter to Receivers: up to 328 ft / 100 m
• Phone / PC to Transmitter: up to 33 ft / 10 m
Package Configuration 1 × Transmitter + 3 × Receivers
📡 Transmitter
Bluetooth Version v5.4
Bluetooth Profiles Classic Bluetooth (A2DP, AVRCP) + Auracast Broadcast (PBP, TMAP)
Audio Codec Auracast LC3
Audio Input Optical (TOSLINK), 3.5 mm AUX, Bluetooth
Operating Range Up to 328 ft / 100 m to receivers
Up to 33 ft / 10 m from phone / PC
Power Input DC 5V / 1A
Firmware Upgrade Yes (DFU support)
Dimensions 4.5 × 3 × 1.2 in (114 × 75 × 30 mm)
Weight 0.2 lbs (90 g)
📥 Receiver
Bluetooth Version v5.4
Operating Frequency 2.402 – 2.483 GHz
Bluetooth Profiles Classic Audio (A2DP, AVRCP) + Auracast Receiver (TMAP, Broadcast Scan)
Supported Audio Codecs Classic: aptX-Adaptive, aptX-HD, aptX, SBC
Auracast: LC3
Bluetooth Profiles A2DP v1.4, AVRCP v1.6.2, Auracast
Operating Range ≤ 328 ft / 100 m
Battery Type Lithium-ion polymer
Average Battery Life Up to 20 hours
Charging Time Approx. 1.5 hours
Charging Port USB-C
Power Supply 5V / 500mA–2A USB charger
Dimensions / Weight Ø49 × 16.3 mm / 22.5 g

Q & A

Q1: Can I use Harmony A3 with my existing speakers?
Yes. Harmony A3 works with powered speakers using AUX or RCA input. Just plug in the receiver to upgrade your current speakers to an Auracast system.

Q2: Will this work in a large space like a church or hall?
Yes. Harmony A3 covers up to 100m / 328ft and is designed for large venues such as churches, classrooms, gyms, and halls with up to 500 seats.

Q3: Can I add more speakers later if I need to expand?
Yes. The system includes 3 receivers and supports unlimited expansion. Add more receivers anytime to cover more rooms or speakers.

Q4: Can I connect my TV, mixer, or laptop to this system?
Yes. Harmony A3 supports Bluetooth, Optical, and 3.5mm AUX input, making it compatible with TVs, mixers, laptops, and media players.

Q5: Will other people interfere with or access my broadcast?
No. Harmony A3 supports password-protected broadcasting and custom naming to keep your audio secure and prevent unwanted connections.

Consultation Booking 📲

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Buy Add-ons & Accessories

Harmony A3 — Compatibility Checker

Avantree Bluetooth Compatibility Checker

Avantree products are designed for versatility and broad compatibility. However, due to technical limitations, not all devices can work together. We strongly recommend checking compatibility before purchase.

All Bluetooth Devices Checker

(Note: This tool is still under development. 💡 Suggestions are welcome anytime! contact us.)