Harmony A1 Multi-Room LE Audio Auracast Venue Speaker System for Home & Events for shared sound.
Harmony A Series · Auracast™ Technology · Not compatible with Harmony 2

Harmony A1

Harmony A1 distributes Bluetooth, optical or AUX audio to three expandable 20W Auracast speakers for synchronized indoor coverage.

3 x 20W included speakersUp to 100m / 328ft line-of-sight coverageIndoor small to mid-sized venues suggested environment
£269.99
Version:
Harmony A1: Long-Range AuracastHarmony A1: Long-Range Auracast Harmony A2: Long-Range AuracastHarmony A2: Long-Range Auracast Harmony A3: Use Your Existing SpeakersHarmony A3: Use Your Existing Speakers Harmony A4: High-Power Venue AudioHarmony A4: High-Power Venue Audio Harmony 2: Ultra-Low-Latency 2.4GHarmony 2: Ultra-Low-Latency 2.4G

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Firmware Update Alerts

Get notified when new Harmony A1 firmware is available.

Firmware updates only. No marketing emails.
Check compatibility Guided enquiry
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60-Day Free ReturnsHassle-Free
Bulk DiscountVolume Pricing Available
Free Setup SupportVenue Specialist Included
  • Multi-Room Indoor Audio – Send one program feed to three included speakers across connected indoor spaces.
  • Three 20W Speakers Included – Deploy synchronized background music, speech or TV audio without purchasing separate speakers.
  • Up to 100m / 328ft Range – Maintain the published line-of-sight connection between the transmitter and Harmony A1 speakers.
  • Bluetooth, Optical & AUX Inputs – Connect phones, TVs, mixers, media players and compatible audio sources.
  • Expandable Speaker System – Add compatible Harmony A1 speakers as the venue coverage needs grow.
  • Approx. 60ms Speaker Sync – Keep speech and program audio aligned across the included speakers.
  • Auracast Listening Support – Compatible Auracast receivers, headphones and hearing aids can join supported broadcasts.
Setup & Support Firmware Update
Harmony A1 £269.99

You Don’t Need New Auracast Hearing Aids

VenuCast works with the hearing devices people already use.

  1. Venue Audio
  2. Auracast
  3. Choose how you listen
Modern Auracast hearing aid

Auracast hearing aids

Connect directly to the Auracast broadcast.

Direct Auracast

Traditional hearing aids with an AuraCoil receiver

T-Coil hearing aids

Use AuraCoil to hear through the hearing aid’s T-Coil.

AuraCoil

Traditional Bluetooth hearing aids Aura C receiver connected to a phone

Bluetooth hearing aids

Use Aura C as a bridge for compatible Bluetooth hearing aids.

Aura C

AuraClip Auracast receiver VenuCast wired on-ear headphones

No hearing aids

Use a receiver with headphones or earbuds.

Receiver + Headphones

Bottom line: One Auracast broadcast can serve many different listeners.

See the Hearing Access Guide

01 · Build your system

Complete the system

View all Add-ons & Accessories

02 · How it works

How it works with your devices

Audio sources

  • Bluetooth phone / tablet
  • Optical TV / digital output
  • 3.5mm AUX / mixer
  • Computer / media player
Find the right cable

Product

Harmony A1
Harmony A1

Listener pathways

  • Included Harmony A1 speakersThree included 20W speakers receive the shared Auracast broadcast.
  • Additional compatible Harmony speakersAdd compatible Harmony speakers to expand indoor coverage as the venue grows.
  • Compatible personal Auracast devicesSupported receivers, headphones and hearing aids can join the same broadcast.

Use the three included speakers, add compatible Harmony speakers or connect supported personal Auracast devices. Compatibility depends on the listener product and its software.

03 · Where it fits

Where it fits

Church & Worship

Church & Worship

Share sermons, announcements and background music from the venue audio source.

Classroom & Training

Classroom & Training

Provide synchronized speech and program audio across indoor learning spaces.

Restaurant & Retail

Restaurant & Retail

Coordinate background audio across connected customer and staff areas.

Meetings & Small Events

Meetings & Small Events

Distribute presentations, music and speech to multiple indoor listening zones.

Best suited to indoor small and mid-sized spaces with a suitable local audio feed and practical line of sight. It is not intended for stadium-scale, outdoor or ultra-low-latency applications.

04 · Product details

Product details

Key specifications

System configuration
1 transmitter + 3 speakers
Wireless connectivity
Bluetooth 5.4 / Auracast
Audio codec
LC3
Speaker synchronization latency
Approx. 60ms
Audio inputs
Bluetooth, optical, 3.5mm AUX
Transmitter-to-speaker range
Up to 100m / 328ft line of sight
Phone/PC-to-transmitter range
Up to 15m / 50ft
Expandable speakers
Up to 100 compatible Harmony Aura speakers
Speaker power output
20W, THD <= 1%
Speaker playtime
Up to 8 hours
Speaker charging
Approx. 4 hours by USB-C
Transmitter dimensions
11.4 × 7.5 × 3 cm
Transmitter weight
90 g
Speaker dimensions
23 × 9 × 8.5 cm
Speaker weight
971 g
SKU
BTST-5309
Net weight
3138 g
Package dimensions
33 × 30.8 × 12.5 cm
Packaged weight
3745 g
Carton dimensions
49 × 33.4 × 34 cm
Units per carton
4

Simple setup

  1. 1Connect the audio sourceConnect a phone, TV, mixer, computer or media source through Bluetooth, optical or 3.5mm AUX.
  2. 2Power and place the speakersPosition the three included speakers indoors and keep suitable line of sight to the transmitter.
  3. 3Confirm the broadcastPower on the system, check synchronized playback and adjust the source and speaker levels.
In the box
  • 3 x Harmony A1 speakers
  • 1 x Harmony A1 transmitter
  • 3 x 1m / 3ft speaker charging cables
  • 1 x 1.5m / 5ft transmitter power cable
  • 1 x 2A USB adapter for speaker
  • 1 x optical audio cable (TOSLINK)
  • 1 x 3.5mm AUX audio cable

05 · Compare

Compare alternatives

FeatureCurrent productHarmony A1Harmony A2Harmony A3Harmony 2
Best forExpandable indoor Auracast speaker coverageShared spaces with mixed Auracast listeningLarge venues using existing PA systemsUltra-low-latency multi-room audio
Included audio endpoints3 x 20W speakers2 x 20W speakersConnects to existing PA / speakers3 x 15W speakers
Audio inputsBluetooth, optical, 3.5mm AUXBluetooth, optical, 3.5mm AUXBluetooth, optical, 3.5mm AUXBluetooth, optical, 3.5mm AUX
Wireless technologyBluetooth LE Audio / AuracastBluetooth LE Audio / AuracastBluetooth LE Audio / Auracast2.4GHz wireless
Typical latencyApprox. 60msApprox. 60msApprox. 60msApprox. 30ms
Published rangeUp to 100m / 328ft LOSUp to 100m / 328ft LOSUp to 100m / 328ft LOSUp to 20m / 66ft

06 · Common questions

Common questions

Can the speakers stay on while plugged in?

Yes. Harmony A1 speakers can stay on while connected to power. If yours turn off automatically, update the speaker firmware →

Can I use a microphone for announcements?

Yes. Add a compatible Venucast microphone kit to make announcements through your Harmony A1 system. Explore microphone kits →

Can I group speakers with different transmitters to play separate audio streams?

Yes. Each transmitter can use its own broadcast name and password. Grouping syncs the password to supported Venucast speakers so each group joins the correct broadcast. See how Grouping works →

Can I add more speakers?

Yes. You can add multiple compatible Harmony A Series speakers. Harmony 2 speakers are not compatible.

What if the sound becomes distorted in Bluetooth mode?

Update your transmitter to the latest firmware to improve Bluetooth audio quality. See the update guide →

Will the speakers work reliably in different rooms?

Yes, in spaces with open doorways or lightweight partitions. For best coverage, place the transmitter centrally. Thick, solid walls can block the signal, so test your intended locations before installation.

Designed for straightforward installation

Venue Audio Made Simple

No rewiring. No complicated setup. Connect Venucast to the audio system you already have.

Mixer / Soundboard / PA System
Auracast Transmitter
Auracast Hearing Aids / T-Coil Hearing Aids
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.

£129.99 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