Harmony A3 Auracast Bluetooth 5.4 Transmitter/Receiver Set. Sends one audio source to 3 receivers with 328ft Range
Auracast audio distribution kit - 1 transmitter + 3 receivers

Harmony A3

Harmony A3 sends Bluetooth, optical or AUX audio to three existing powered speakers and expands with additional compatible receivers.

1 transmitter + 3 receivers included systemUp to 100m / 328ft line-of-sight coveragePowered speakers via AUX or RCA speaker connection
$249.99

Firmware Update Alerts

Get notified when new Harmony A3 firmware is available.

Firmware updates only. No marketing emails.
Check compatibility Guided enquiry
Fast Local Delivery1-3 Business Days
60-Day Free ReturnsHassle-Free
Free Setup SupportVenue Specialist Included
  • Use Existing Powered Speakers – Add Auracast distribution to active speakers with 3.5mm AUX or RCA input.
  • One Source to Multiple Speaker Zones – Send the same program audio to three included receivers out of the box.
  • Expandable Auracast System – Add compatible receivers as rooms, speakers or listening zones increase.
  • Bluetooth, Optical & AUX Inputs – Connect phones, TVs, mixers, computers and compatible media sources.
  • Up to 100m / 328ft Range – Maintain the published line-of-sight connection between transmitter and receivers.
  • Up to 20 Hours per Receiver – Support extended venue operation with rechargeable portable receivers.
  • Broadcast Naming & Password Control – Configure the Auracast broadcast for easier identification and controlled access.
Setup & Support Firmware Update
Harmony A3 $249.99

01 · Build your system

Complete the system

<tc>AuraLink</tc> Works with Harmony A3 AuraLinkAuracast & Récepteur audio Bluetooth 5.4 avec puce Qualcomm, 20 h d'autonomie, sortie AUX, multi-haut-p...$67.99→
<tc>AuraClip</tc> Works with Harmony A3 AuraClipRécepteur Auracast, Qualcomm BT 5.4, volume indépendant, sauvegarde automatique de 3 diffusions, commutatio...$69.99→
FreeMic Duo Works with Harmony A3 FreeMic DuoWireless Headset & Handheld Microphone System for Powered Speakers, Mixer, & Venucast Transmitters ...$79.99→
View all Add-ons & Accessories

02 · How it works

How it works with your devices

Audio sources

Bluetooth phone / tabletOptical TV / digital output3.5mm AUX / mixerComputer / media player

Product

<tc>Harmony</tc> A3
Harmony A3

Listener pathways

  • Powered speakersConnect each receiver to an active speaker through 3.5mm AUX or RCA.
  • Additional compatible receiversAdd compatible receivers to extend the same broadcast to more powered speakers.
  • Personal Auracast listenersCompatible Auracast receivers, headphones and hearing aids can join the same broadcast.

Harmony A3 requires powered speakers with a compatible AUX or RCA input. Passive speakers cannot be driven directly by the receivers.

03 · Where it fits

Where it fits

Church & Worship

Distribute sermons, announcements and program audio to powered speakers across venue areas.

Classroom & Training

Share clear speech and lesson audio across connected rooms without long signal cables.

Restaurant & Retail

Send synchronized background audio to powered speakers in customer and staff zones.

Meetings & Events

Expand presentation, music and speech coverage through existing powered speakers.

Best for indoor audio distribution where powered speakers already exist. Range and stability depend on walls, interference, placement and venue layout.

04 · Product details

Product details

Key specifications

Package configuration
1 transmitter + 3 receivers
Wireless connectivity
Bluetooth 5.4 / Auracast
Typical latency
Approx. 50-70ms
Audio inputs
Optical, 3.5mm AUX, Bluetooth
Transmitter-to-receiver range
Up to 100m / 328ft line of sight
Phone/PC-to-transmitter range
Up to 10m / 33ft
Receiver audio output
3.5mm AUX or RCA to powered speakers
Expansion
Add compatible receivers as the system grows
Receiver playtime
Up to 20 hours
Receiver charging
Approx. 1.5 hours by USB-C

Simple setup

  1. 1Connect the audio sourceConnect a TV, mixer, computer, media player or phone through optical, AUX or Bluetooth.
  2. 2Connect the receiversConnect each included receiver to a powered speaker through 3.5mm AUX or RCA.
  3. 3Start and confirm the broadcastPower on the system, join the receivers and confirm audio and volume at each speaker location.
In the box
  • 1 x Harmony A3 transmitter
  • 3 x AuraLink receivers
  • 1 x optical audio cable
  • 1 x 3.5mm AUX audio cable
  • 3 x receiver-to-speaker connection cables
  • USB-C data and power cables
  • 1 x power adapter

05 · Compare

Compare alternatives

FeatureCurrent productHarmony A3Harmony Lite 1 | Système multi-haut-parleurs sans fil AuracastHarmony A1Harmony A2
Best forExisting powered-speaker distributionEntry multi-speaker coverageEnhanced multi-speaker soundCompact Auracast speaker system
Included endpoints3 receivers for powered speakers3 x 20W speakers3 x 20W speakers3 compact speakers
Audio inputsBluetooth, optical, 3.5mm AUXBluetooth, optical, 3.5mm AUXBluetooth, optical, 3.5mm AUXBluetooth, optical, 3.5mm AUX
Wireless technologyBluetooth 5.4 / AuracastBluetooth 5.4 / AuracastBluetooth 5.4 / AuracastBluetooth 5.4 / Auracast
Published rangeUp to 100m / 328ft LOSUp to 100m / 328ft LOSUp to 100m / 328ft LOSUp to 100m / 328ft LOS
Speaker connectionExisting powered speakers via AUX/RCAIncluded 20W speakersIncluded 20W speakersIncluded compact speakers

06 · Common questions

Common questions

What is Harmony A3 designed for?

Harmony A3 distributes one audio source to multiple existing powered speakers in churches, classrooms, studios, cafes, gyms, meeting spaces and events.

What is included in the system?

The system includes one Harmony A3 transmitter, three AuraLink receivers, an optical cable, a 3.5mm AUX cable, receiver connection cables, USB-C charging and power cables, and a power adapter.

Can I use Harmony A3 with my existing speakers?

Yes, when the speakers are powered and accept 3.5mm AUX or RCA input. Passive speakers require a separate amplifier and cannot be driven directly by the receivers.

What is the expected wireless range?

The published transmitter-to-receiver range is up to 100m / 328ft line of sight. Walls, people, interference and venue layout can reduce usable range.

Can I add more speakers later?

Yes. Add compatible receivers and connect each one to another powered speaker to expand the system.

Which audio sources can I connect?

Harmony A3 accepts optical, 3.5mm AUX and Bluetooth audio from compatible TVs, mixers, computers, media players and phones.

Can the Auracast broadcast be secured?

Yes. The transmitter supports a custom broadcast name and password-controlled access for compatible listeners.

Venucast Church Deployment Best Practices Pack with roll-up banner, Auracast signage, hearing aid connection guide, and onboarding guide

READY FOR SUNDAY

Installing the system is only half the job.

Help worshipers discover the service and connect confidently with a ready-made communication pack for a smoother Auracast rollout.

$149.99 Church Deployment Pack

Pre-order now — estimated to ship in late September 2026.

  • One roll-up banner with stand
  • Two A3 Auracast signage posters
  • One hearing aid connection guide
  • One Church onboarding guide
See what’s included