01
Live speech or video
Choose the lower-latency Harmony 2 when lip-sync, presentations or a live microphone feed matter most.
Choose Harmony 2 →
Wireless multi-speaker audio
Wireless Multi Speaker System for Events
Send one audio source to multiple speakers with synchronized sound—without long cable runs, Wi-Fi, or repeated pairing. Choose a complete speaker set, or add wireless receivers to the powered PA speakers you already own.
- One source, synchronized speakers
- No Wi-Fi or app required
- Expandable as your event grows
- Optical, AUX or Bluetooth source options
When to choose what
Start with the job your sound system must do
The right system depends more on latency, speaker type and movement than on guest count alone. Use these six event scenarios to narrow the choice quickly.
02
Cafés, bars & shared spaces
Choose Harmony A0 for a compact Auracast transmitter-and-three-speaker setup that distributes the same audio across tables and small shared areas.
Choose Harmony A0 →03
Small–mid indoor event
Choose Harmony A1 for a ready-to-use transmitter plus three 20W speakers and wide indoor coverage.
Choose Harmony A1 →04
Music-first shared space
Choose Harmony A2 for synchronized background music with Balance, Voice and Bass EQ controls.
Choose Harmony A2 →05
Use your existing PA
Choose Harmony A3 to feed the same audio into multiple powered speakers through AUX or RCA.
Choose Harmony A3 →06
Moving outdoor group
Choose ShareCast for portable voice or program audio with clip-on IP67 speakers—not main-stage PA sound.
Choose ShareCast →Need different audio in different areas? These systems distribute one source per transmitter. Independent zones need separate transmitters or separate systems. They do not provide app-based, per-speaker music selection.
Event system collection
Recommended wireless multi-speaker systems
Six clear paths: low-latency complete systems, Auracast speaker sets, a receiver kit for existing powered speakers, and a portable option for moving groups.
Best for live speech + video
Harmony 2
$279.99
A complete transmitter-and-speaker system for indoor presentations, ceremonies and program audio where lower delay matters.
- Approx. 30 ms speaker-sync latency
- Up to 65 ft / 20 m; up to 100 Harmony 2 speakers
- Optical, 3.5 mm AUX and Bluetooth inputs
Best for cafés + shared spaces
Harmony Lite 1 | Système multi-haut-parleurs sans fil Auracast
$299.99
A transmitter plus three compact Auracast speakers for synchronized table-by-table audio in cafés, bars, offices and other shared spaces.
- Bluetooth 5.4 Auracast broadcast
- Up to 328 ft / 100 m in favorable conditions
- Optical, 3.5 mm AUX and Bluetooth inputs; expandable with compatible Auracast speakers
Best all-round Auracast set
Harmony A1
$299.99
A transmitter plus three 20W speakers for synchronized indoor audio across meeting rooms, cafés and small-to-mid event spaces.
- Approx. 60 ms speaker-sync latency
- Up to 328 ft / 100 m in favorable line-of-sight conditions
- Expandable with compatible Auracast speakers and devices
Best for music-first spaces
Harmony A2
$299.99
A complete three-speaker Auracast system with simple Balance, Voice and Bass EQ modes for background music and shared audio.
- Approx. 60 ms speaker-sync latency
- 20W speakers; recommended up to 100 ft / 30 m
- Optical, 3.5 mm AUX and Bluetooth inputs
Best for existing powered PA
Harmony A3
$249.99
One transmitter and three compact receivers turn powered speakers or active PA systems into a scalable one-to-many wireless system.
- Approx. 50–70 ms latency
- Up to 328 ft / 100 m in open line-of-sight
- Receiver outputs: 3.5 mm AUX or RCA; not for passive speakers
Best for moving groups
ShareCast
$139.99
Compact clip-on speakers for guides, field activities and small outdoor groups that need open-ear voice or program audio.
- IP67 water- and dust-resistant speakers
- Up to 15 hours playtime
- Portable group audio—not a replacement for high-output event PA
Side-by-side comparison
Compare event audio systems
Match your source, latency requirement and speaker type before comparing price.
| System | Best for | What is included | Latency | Advertised range* | Expansion / compatibility |
|---|---|---|---|---|---|
| Harmony 2 | Indoor speech, video and presentations | 1 transmitter + 3 × 15W speakers | Approx. 30 ms | Up to 65 ft / 20 m | Up to 100 Harmony 2 speakers |
| Harmony A0 | Cafés, bars and compact shared spaces | 1 Auracast transmitter + 3 compact speakers | Not published | Up to 328 ft / 100 m | Expandable with compatible Auracast speakers |
| Harmony A1 | Small–mid indoor events and shared spaces | 1 Auracast transmitter + 3 × 20W speakers | Approx. 60 ms | Up to 328 ft / 100 m | Compatible Auracast speakers and listening devices |
| Harmony A2 | Background music and better tonal control | 1 Auracast transmitter + 3 × 20W speakers | Approx. 60 ms | Recommended up to 100 ft / 30 m | Compatible Auracast speakers and listening devices |
| Harmony A3 | Existing powered speakers or active PA systems | 1 transmitter + 3 AUX/RCA receivers; no speakers | Approx. 50–70 ms | Up to 328 ft / 100 m | Add receivers; powered speakers only |
| ShareCast | Moving tours, guides and outdoor small groups | USB-C transmitter + clip-on IP67 speakers | Approx. 142 ms | Up to 50 ft / 15 m | Add ShareCast or compatible Auracast speakers |
*Wireless range is measured under favorable conditions. Walls, people, competing wireless traffic and transmitter placement can reduce real-world coverage. For live microphones or video, prioritize latency before maximum range.
Buy with a deployment plan
Avoid the wrong system before event day
Tell us your venue layout, audio source, speaker type and whether speech must match video. We will help verify the system, quantities and connection path before you order.
60-Day Returns
More time to confirm the system fits your use case.
2-Year Warranty
Extended protection when purchased directly from Venucast.
Fast Local Delivery
Ships from a local warehouse where available.
Free Setup Support
Connection and expansion help from the Venucast team.
Frequently asked questions
Wireless multi-speaker system FAQ
Answers to the compatibility, delay, expansion and setup questions customers ask most often.
How do I choose a wireless multi speaker system for events?
Start with four questions: Is the event indoors or outdoors? Is the source speech, video or background music? Do you need new speakers or receivers for an existing powered PA? How far is the furthest speaker from the transmitter? Choose Harmony 2 for lower-latency indoor speech/video, Harmony A1 or A2 for a complete Auracast speaker set, Harmony A3 for existing powered speakers, and ShareCast for moving groups.
Will every speaker play in sync?
Speakers or receivers within the same supported system receive the same broadcast and are designed for synchronized playback. Do not mix Harmony 2’s dedicated speaker-sync radio link with unrelated speakers. Auracast models should be checked for broadcast compatibility before mixing brands.
Which system has the lowest delay for microphones or video?
Harmony 2 is the strongest choice here, with approximately 30 ms speaker-sync latency. Harmony A1 and A2 are around 60 ms, while Harmony A3 is approximately 50–70 ms. For a live microphone, connect a mixer or wireless microphone receiver through a line-level AUX output; direct XLR, USB or TRRS headset microphones are not supported by these transmitters.
Can I connect the system to my existing PA speakers?
Yes—choose Harmony A3 when your speakers are powered (active) and accept 3.5 mm AUX or RCA input. The kit includes one transmitter and three receivers. Passive speakers still require a separate amplifier and cannot be driven directly by the receivers.
Do I need Wi-Fi, an app or repeated Bluetooth pairing?
No Wi-Fi or control app is required for the core systems on this page. The transmitter takes audio by Optical, AUX or Bluetooth, then distributes it to its speakers or receivers. Compatible Auracast receivers join the selected broadcast instead of using traditional one-to-one Bluetooth pairing.
Can different rooms play different music?
Not from one transmitter. One transmitter distributes one audio source to its connected speakers or receivers. If two rooms need independent content, plan separate transmitters or separate systems and assign each group to its own source or broadcast.
How many speakers can I add?
Harmony 2 supports up to 100 Harmony 2 speakers. Harmony A1 and A2 are designed to expand with compatible Auracast speakers and devices. Harmony A3 can expand by adding compatible receivers for more powered speakers. Actual usable coverage depends on layout, power, obstacles and RF conditions—not speaker count alone.
Can I use these systems outdoors?
ShareCast is the portable IP67 option for moving outdoor groups, guides and activities. Harmony A1, A2 and Harmony 2 are primarily indoor systems and may not provide enough volume for large, noisy outdoor events. For an outdoor PA, use appropriately powered active speakers with Harmony A3 and verify range and weather protection separately.
Can I keep an Auracast broadcast private?
Harmony A3 supports broadcast naming and password-protected broadcasting. If privacy or several nearby broadcasts matter, tell us how many systems will operate at once so the channel and naming plan can be checked before deployment.
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