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Addon C10 Mk II

3 x multiroom.

A heavy weight champion of multiroom HiFi performance as well as compatibility with AirPlay 2 and Google Cast. Still compact and easy to place, but this speaker packs a real punch. C10 MkII offers multiroom listening via Audio Pro multiroom system, but also via Google Cast and AirPlay 2.

450 $
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(10 reviews)
Technical Specification
Addon C10 Mk II
Amplifiers & Drivers

Digital Class D – 2 x 20 W + 40 W
Tweeter: 2 x 3⁄4” textile dome
Woofer: 5.25” long throw


Sub output
USB DC out/max. 5V, 1000 mA


Wi-fi + Ethernet, Bluetooth 4.0 and RCA


Range: 45 - 22,000 Hz
Crossover: 2.500 Hz


HxWxD: 166 x 320 x 180 mm

Multiroom Functionality

Audio Pro Multiroom

Network Compability

802.11 b/g/n, 2.4 GHz only

Audio formats

MP3, WMA, AAC, FLAC, Apple Lossless

10 reviews for Addon C10 Mk II

Music sounds so good over Spotify Premium! I just wish it had a 3.5mm input jack for things like connecting to computers/monitors that don’t have speakers. There is a L and R (white and red) audio in which is fine just requires another cable, just no generic 3.5mm audio in for ease of use when quality isn’t that important. Not a deal breaker though still 5/5 from my noob (aka not audiophile) experience!

Paul Cunningham

The sound is as good as advertised – remarkable reproduction for such a small box.

Once the unit is tied into a network (not exactly the most direct process until a few tries), it responds well to airplay, which is my principal wireless source and the reason I chose this edition.

One rough edge: Is it impossible to differentiate the C10 Mk II from other networked devices? If not, it would be a great upgrade to the next firmware version.

The app is primitive and the channel buttons are useless unless one subscribes to one of the affiliated services, which I do not.

All-in-all, a superior product. Thank you.


I returned the C10 MKII. The sound was clean and the presence was good. However, to me music sounded buried and non-lively for lack of better terms. My first wireless speaker years ago was the Definitive Technology W7. In its class of wireless mono speakers, although, it does not have the broad lower end due to its diminutive size, sounds energetic and pleasing. All the music sounds forthright. Must have a remarkable DSP to produce such volume with the right balance of instrumental and vocal reproduction.

What hobbles the W7 is DTS Play-fi. Plex is a must and only Chromecast, Sonos and Airplay can utilize the Plex app. With my experience with Sonos and Chromecast, Airplay 2 by far is the most convenient method of casting music due to the fact that Airplay is baked into the OS.

I was hoping the MKII with Airplay 2 would be the ultimate go to speaker to place in various locations in the house but to me the W7 sounds better. My current solution is the Bluesound Pulse 2I with onboard volume controls and Airplay 2. I now have 2 of these attached to W7 speakers. For now my main Meridian active speakers have an Airport Extreme with Airplay 2 attached to them. In the future I plan on a third Pulse 2I for onboard volume control. The great thing about the 2I I can upgrade to better active speakers of my choice anytime I want to.

If Audio pro has never experienced a W7 I suggest you locate one for evaluation. The W7 is no longer in production but I’m sure there are used ones still available.

The below list are speakers I have auditioned over the years looking for a single solution to a worthy sounding speaker with onboard volume control with Plex access and most recently for me, Airplay 2 is a must. Most of these speakers sound atrocious.

Definitive Technology W7
Monster SoundStage MSP SSTG S1 MINI WW
Riva Festival RWF01
Riva Arena RWA01
Sonos SL
Jbl Playlist
Vizio SP50-D5 crave 360
Bang & Olufsen Beoplay M3 1200323
Cambridge Audio Yoyo L
Harman Kardon Omni 20
Teufel One S
AudioPro C10 MKII

Nick Srikanth

Product is good in clarity and sonic balance but the 80W rating seems misleading. It is not loud enough to replace a home stereo but a very good desktop source if music


This is the 5th time I’ve tried to hear something, anything, out of the C10. So far I’ve been successful 2 times. I’ve also wasted far more time trying to get it to play than listening to music.

My advice:
1) If you’re on Airplay 1, stay there. 2 is a pure Apple implementation designed to make using non-Apple products as distasteful as possible.
2) Via current iOS14, if you have an ATV, it’s either on and playing (it does not matter if someone is using the tv, it does not matter if the ATV is in a bedroom whose occupant doesn’t care to listen to your music). The C10 is a slave to the ATV and will not play without it. The only way to get to the C10 is through the ATV. It’s whole house/multi room or nothing.
3) If you accept your ATV playing at the same time as the C10 2, understand the practice of changing volume via your iOS device needs to be done with the physical volume buttons. Trying to change it in the Airplay menu in the Music app will disconnect both the ATV and the C10. You are now on your way to reconnecting. That is if the Music app doesn’t crash. Happens on all 3 of my iOS14 iPhone/iPads.
4) If you plan to use an iOS or Android device as an input understand that lovely USB port on the back is service only. No power. Bring along an adapter, perhaps a multi outlet ac plug as well.
5) If you select a track, press play and hear nothing, give it time. After about 30 seconds it will start to play. Oh, but the track shown in the Music app is not the track you’re listening to. Give it time, it will eventually show the proper track.
6) If you’re a Luddite and still using Mojave or earlier with iTunes, most of the above does not apply. iTunes knows how to deal with Airplay 2. It’s Apple’s wonderful new Music app that’s the problem here.

Assuming it worked, my review:
The C10 2 has all the joys of WiFi enabled consumer devices of 15 years ago. So far I’ve had to reboot my network twice and do a soft reset on my ios device to get this thing to show up on an Airplay device list. That’s after unplugging and moving the device to another room. I spent a good 2 hours messing with it until I finally gave up, wiped the app, reset the C10, rebooted my network and viola, it made a short lived appearance on the Airplay menu. To convince myself the C10 has the ability to come back properly from being unplugged, or something like a momentary power outage, I unplugged it again. Viola, gone. As in do it all over again.

Not recommended for anyone thinking of moving it around or in an area prone to power outages.

SQ. For all the great reviews this gets, none of them prepare you for the SQ prior to breaking in. It stinks. You have been duly warned. At first it sounds like a Bose, tubby, mellow and weak in the upper registers. Give it a day or so, after break-in it sounds a lot better. Audiophile or HiFi no. But certainly better than Bose and other highly marketed products. The music is decent, no irritations, but no wow moments. Throws out a lot of sound. It has no problem throwing out very listenable sound in my 31’ x 17’ living room that’s wide open to an adjacent 23’ x 10’ porch and 14’ x 11’ foyer. Soundstage doesn’t exist. Probably par for the course with this genre of speaker.

It’s ashamed my C10 is tied to an Apple home. From a sound pov I’d keep it. But the poor implementation by Apple and Audio Pro makes it a return.

Suggestions to Audio Pro: 1), offer a setting to connect direct to the router in your app. Let the Airplay 2 mess reside with Apple’s Music app which will likely forever be an evolving mess. Apple has proven for a long time it doesn’t get music. 2), provide power and data in via a USB C port (may need a DAC, don’t know). 3), I think for $400, a bit more definition could be squeezed out of the sound. In my view it sounds better than most, but not by enough. 4), in spite of the fact your website notes it’s 2.4 GHz only (for good reason), mine clearly shows the Mk2 connecting to 5GHz. For the same good rationale for 2.4GHz, you now should switch back. 5GHz limits strength. It’s not like you’re broadcasting 5K BD rips, this is audio. The limited signal strength results in unnecessary drops. My USA home and Swiss apartment both have walls that kill 5GHz.


Looks fantastic and sounds even better, I couldn’t be happier with the c10




Got more speaker than I expected.

Keith B.

Sounds good, works as expected. Encountered issue with auto-standby mode turning off while playing when using presets via buttons on speaker.