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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.


3,000 kr
Add to cart
(77 reviews)

Addon C3 is also included in these packages

Multiroom Small 2
Incl: 1 x A10 & 1 x Addon C3.
5,000 kr 4,500 kr
See package Read more
Multiroom Medium 2
Incl: 1 x A10, 1 x Addon C3 & 1 x C5.
7,500 kr 6,375 kr
See package Read more
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 our "easy-to-use" app.

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

Up to 15h (at 50% vol).
9h at 100% vol.

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

77 reviews for Addon C3
DHM Fraser

This is the second Addon C3 I purchase directly from AudioPro, within 6 months time.
My order received in 11 days in very good condition.
The quality of making and finish is almost perfect.
As for the sound? I can’t imagine a speaker of that size & volume performing so HiFi, if you know what I mean!
It’s needless to say too many words for such a good speaker with so many fine reviews worldwide, and a company with great professionalism and passionate
about its products, as I can personally verify.
P. S. My objections are 3:
Two small ones:
1) I would like more maximum volume (if you made
a good discount on Black Friday sales period, I would have bought D-1 instead, for sure)
2) More direct presets ON the speaker would be
very helpful.
And a bigger one:
3) Of course a much better application with more capabilities, like equalizer presets for certain genres of music and generally a better user interface and response.
It’s a pity to lose 5 star’s rating due to the app only!

Paul F.

Great. But doesn’t work with 5ghz WiFi. Only 2.4. Which is annoying but life goes on.

Rob G.

Super box

John Dimakis

After 20 hours of play,the product sounds hi end category,It is clean- detailed with depth- MUSICAL and finally i enjoy listening my music.I am playing it via top quality cable.The job you have done- construction wise-electronics – speaker cabin optimization is really superb. CONGRATULATIONS.One day i will open it, to see the inside’s,because i am also an amateur hobbyist with 3 hi end systems ,but i have tuned them up to play Music tht you can enjoy.CONGRATULATIONS.

John R.
Kaste M.