Avantree Harmony 2 – Multi-Room Wireless Speaker System with Bluetooth & Wired Inputs, Easy Setup, Expandable, 30ms Low-Latency Sync for Whole-Home, Meeting Rooms & Small Indoor Events
Price: $269.99 - $249.99
(as of Feb 06, 2026 22:15:52 UTC – Details)
Product description
Frequently Asked Questions
Q1: What devices can I use this with?
A: Most phones, TVs, tablets, and computers through Bluetooth, AUX, or Optical connection.
Q2: Can I add more speakers later?
A: Yes. You can expand the system by adding more Harmony 2 speakers, up to 100 total.
Q3: Can I use this outside?
A: It’s best for indoor use – like at home, in a classroom, or for small events. Outdoors, the sound may feel too soft.
Q4: Does this work as a PA system with a microphone?
A: No. This is not a PA or sound amplification system. It is designed for audio distribution only and requires a line-level output from a powered mic receiver or mixer
Q5: Can I use one speaker by itself?
A: Yes. Each speaker also works alone as a regular Bluetooth speaker.
Independent Volumes
Adjust each speaker’s volume separately from the others’ for total control.
Perfectly Positioned
Small handles allow you to hang your speakers on trees, from walls, or wherever else.
Easily Portable
Freely bring or move the battery-powered speakers around and even use them while they’re charging.
Always In Sync
The speakers play in perfect sync with each other with no distracting audio delays.
1 Independent Volumes
2 Perfectly Positioned
3 Easily Portable
4 Always In Sync
SPECIFICATION
Wireless Technology 2.4GHz RF + Bluetooth 5.4 Input Options Bluetooth, Optical, AUX (3.5mm) Speaker Range (to Base) Up to 65 ft / 20 m Bluetooth Range (to Phone) Up to 10 ft / 3 m (for best performance, stay within 3 m) Latency (Full Kit) Less than 30 ms – perfect audio sync Battery Type Built-in rechargeable (speakers only) Playtime per Charge Up to 6 hours Charging Time 4 hours Power Port (Transmitter) USB-C Power Supply 5V / 1–2A Speaker Output 15W, THD ≤ 1% Supported BT Profiles A2DP, AVRCP, HSP, HFP Speaker Size 8.3 × 3.5 × 3.5 in (210 × 90 × 90 mm) Speaker Weight 2.1 lbs (940 g) per unit
Comparison Table
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Customer Reviews
4.0 out of 5 stars 139
4.2 out of 5 stars 43
4.5 out of 5 stars 296
4.3 out of 5 stars 172
4.4 out of 5 stars 115
Price
$249.99$249.99
$129.99$129.99
$299.99$299.99
$179.99$179.99
$235.99$235.99
Best for
Multi-room audio, parties, tv
Outdoor, group sharing
Church, classrooms, tv
Church, classrooms
2 audio sources in same place
Audio Source Interface
Bluetooth/AUX/Optical
USB-C
Bluetooth/AUX/Optical
AUX/Optical
AUX/Optical
Super Low Latency
✔
✔
✔
✔
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Scalable to 100
✔
✔
✔
✔
✔
Clear Voice / Bass EQs
✔
–
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✔
Listening Device Type
Wireless speakers
Wireless speakers
Wireless headphones
Wired headphones, speakers
Wireless headphones
Use as BT Headphones / Speaker
✔
✔
Coming soon
N/A
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Transmitter Upgrade
Upgrade to Bluetooth TX
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Upgrade to Bluetooth TX
Upgrade to Bluetooth TX
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【For Multi-room Indoor Audio】Designed for homes, classrooms, offices, and meeting rooms needing the same audio across multiple speakers. Ideal for background music, TV sound, and spoken content with consistent room-to-room coverage.
【Ultra Low Latency Under 30ms】Delivers synchronized playback with under-30 ms latency, keeping audio aligned across all speakers. Speech and video sound natural with no noticeable delay or echo during shared listening.
【Simple Setup, No App Required】Connect the transmitter to your TV, phone, or laptop via optical, AUX, or Bluetooth. Power on and speakers auto-connect with no app installation or complex setup steps.
【Not For Large Outdoor Venues】Not designed for large outdoor spaces or very loud environments due to limited maximum volume. Best suited for indoor use where clear, synchronized audio coverage is required.
【Limited Microphone Input Type】Not compatible with USB mics, direct XLR mics, or 3.5mm TRRS headset mics. Requires line-level output (3.5mm TRS or RCA) from a powered mic, wireless receiver, or mixer.
