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Addon C3

Carry around multiroom sound. 

Small in size, big on sound, the C3 delivers astonishing audio quality for its size. Battery powered so the music can move with you. Play your music wirelessly at home in a multiroom setup, or carry it around with you and play wirelessly with Bluetooth. Out in the garden, or bring it along to the beach.


330 $
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(26 reviews)
All rooms liberated

Have a speaker in every room and play to one or all at the same time. Everybody can play their personal music on which ever speaker they want. Play from internet streaming services, from a computer or NAS in your network, or music on your phone.
All controlled by the App Of Simplicity.

Play nice. Everywhere.

Multiroom sound and multi person usage. Group and play, set to left/right for stereo pairs. Play all together. Or not. You choose.

Music should be felt

The Audio Pro renowned sound quality is always present. Feel every detail in your music.

All the music you need

Well, we don’t have every single little music service on the planet, just the ones that count.

Wifi Presets - Play direct

No need to start fiddling with your phone, just push and play. Save your favourite radio station or playlist to a button simply by pressing it while playing content.

The battery lasts a loooong time

Addon C3 is designed to be used for a long time. The battery lasts a full 15 hours at half volume. And a whopping 9 hours at maximum volume!

Connectivity for all

With Airplay®, Spotify Connect® and Bluetooth® you can play all your music any way you like.

The Audio Pro multiroom app

Download here
Technical Specification
Addon C3
Amplifiers & Drivers

Amplifiers: 2x5W + 15W Digital class D
Tweeter: 2 x 3⁄4” textile dome
Woofer: 3.5” long throw


Wi-fi + Ethernet, Bluetooth V4.0, and 3.5 mm stereo


Range: 60 - 20,000 Hz
Crossover: 5.200 Hz


HxWxD: 115 x 215 x 135 mm

Multiroom Functionality

Audio Pro Multiroom

Network Compability

802.11 b/g/n, 2.4 GHz only

Streaming Features

Spotify Connect, Apple Airplay & Bluetooth

Audio formats

MP3, WMA, AAC, FLAC, Apple Lossless

26 reviews for Addon C3

Audio quality is great, and for the price exceptional. Build quality great. Multi-room works well. Only downside is that software is somewhat lacking: not very intuitive, doesn’t support multiple Spotify streams to multiple speakers and a few other things. Hopefully this will change with ongoing development.


We have been happy with our new C3 speaker. It has great sound, impressive range, looks great and pairs nicely for multiroom purposes. We use it with Spotify and it integrates well.

Karl L.

Sounds great! Easy to use. Audiopro customer service is bad I recommend purchasing from a different retailer.

Juha Kauhanen

Happy with the pair of C3s! Coming from someone whos owned several different portable speakers about the size of C3. I now have Drumfire with 2x D-1s and these C3s. Happy, happy.

Hannah Rose

It has already broken. The sounds is all crackly. I woul dlike an exchange or refund.


Easy to set up, sounds great and looks awesome 🙂


C3 is nice as a basic Bluetooth speaker, very portable.


Excellent speakers. But the multiroom function is often dysfunctional and some of my speakers refuse to sync. Still combing the forum for answers that explains why some speakers don’t have the +