Audio T Verdict
The Triangle AIO C is a very simple way of adding modern music streaming to an amplifier or active speaker system that you already like.
At just 80mm square and 20mm high, it takes up virtually no space, yet provides Wi-Fi and Ethernet network playback, AirPlay, Spotify Connect, internet radio, access to major streaming services and playback of music stored on phones, computers and network drives.
Triangle supports network audio up to 24-bit/192kHz, so the AIO C is not limited to compressed streaming or basic internet radio. APE, FLAC, WAV, Apple Lossless, AAC and MP3 files are all supported.
The clever bit is that Triangle provides both analogue and digital outputs. Connect the 3.5mm analogue output to an ordinary amplifier and the AIO C operates as a complete compact streamer. Alternatively, use its optical digital output with an external DAC or amplifier that already has a suitable digital input.
It also becomes part of Triangle's wider AIO multiroom ecosystem. An AIO C connected to the main Hi-Fi can be grouped with compatible Triangle AIO products elsewhere in the house, allowing the same music to play across several rooms.
There is no Bluetooth, touchscreen or large front-panel display. The AIO C is deliberately much simpler than that. Setup and everyday control are handled through the Triangle AIO app, AirPlay, Spotify Connect or another supported network source.
If you already own a perfectly good amplifier but want to bring streaming into the system without replacing it, the AIO C is a neat and compact solution.
Triangle AIO C Compact Wi-Fi Music Streamer
The AIO C is a miniature network music player designed to add wireless streaming and multiroom functionality to an existing Hi-Fi system.
Key features include:
- Wi-Fi network music streaming
- Wired Ethernet network connection
- Up to 24-bit/192kHz network playback
- Triangle AIO app for iOS and Android
- AirPlay compatibility
- Spotify Connect
- Spotify
- Deezer
- Tidal
- Qobuz
- Amazon Music
- TuneIn internet radio
- UPnP/DLNA network playback
- NAS music-library playback
- Triangle AIO multiroom
- Analogue 3.5mm stereo output
- Optical Toslink digital output
- 24-bit/44kHz optical output
- 10/100Mbps Ethernet
- 2.4GHz Wi-Fi
- Compact aluminium enclosure
- 80 x 80 x 20mm dimensions
- 160g weight
Add Streaming Without Replacing Your Amplifier
The AIO C is particularly useful when the amplifier at the heart of your system still performs perfectly well but predates modern music streaming.
Rather than replacing the entire amplifier, connect the AIO C to an available input and it adds access to online music services, network storage, internet radio and compatible mobile devices.
Two Ways to Connect to Your Hi-Fi
The AIO C provides both analogue and digital audio outputs.
Analogue Output
- 3.5mm stereo mini-jack
- Connect directly to an amplifier's analogue input
- 3.5mm-to-RCA cable supplied
- Uses the AIO C's internal digital-to-analogue conversion
- Ideal for amplifiers without digital inputs
Optical Digital Output
- Optical Toslink connection
- 24-bit/44kHz output
- Connect to an amplifier or external DAC
- Allows the downstream DAC to handle conversion
- Useful with digitally equipped Hi-Fi systems
The 3.5mm Connection Is an Output
The 3.5mm connection sends analogue audio from the AIO C to an amplifier, active speakers or another suitable line-level input.
It is not an auxiliary input for connecting another source to the AIO C.
Using the Analogue Output
For a traditional integrated amplifier, connection can be as straightforward as:
- Connect the AIO C to your home network
- Connect its 3.5mm output to an RCA line input on your amplifier
- Select that amplifier input
- Choose music from the Triangle AIO app or another supported service
Triangle supplies a 3.5mm-to-RCA cable for this purpose.
Using an External DAC
If your amplifier or system already contains a DAC that you prefer, use the AIO C's optical digital output.
In this configuration, the AIO C acts as the network source while the downstream DAC handles digital-to-analogue conversion.
24-Bit/192kHz Network Playback
Triangle specifies network music playback up to:
24-bit / 192kHz.
This applies to compatible material streamed across the network rather than meaning that every streaming service or track is automatically supplied at that resolution.
High-Resolution Music Depends on the Source
Actual playback resolution depends on factors including:
- The streaming service
- Your subscription level
- The particular album or track
- The original file resolution
- Network conditions
- The connection used between the AIO C and the rest of the system
Network and Optical Resolution
The AIO C supports compatible network material up to 24-bit/192kHz.
Its optical digital output is specified at 24-bit/44kHz, so the maximum network playback figure does not also describe the optical connection.
Wi-Fi or Ethernet
The AIO C can connect to your home network in two ways:
- 2.4GHz Wi-Fi
- 10/100Mbps Ethernet
2.4GHz Wi-Fi
Triangle specifies IEEE 802.11 b/g/n wireless networking on the 2.4GHz band.
2.4GHz generally provides useful range around a home, although actual performance depends on the router, interference, building construction and the position of the AIO C.
Wired Ethernet
A 10/100Mbps RJ45 Ethernet socket provides an alternative to wireless networking.
A wired connection can be particularly useful where:
- The Hi-Fi is a long way from the router
- Wi-Fi reception is weak
- The home has substantial walls
- Network reliability is the priority
- Several AIO products are being grouped together
Wi-Fi Network Streaming
The AIO C is designed around network streaming rather than Bluetooth.
Compatible playback can be controlled through the Triangle AIO app, AirPlay, Spotify Connect and supported streaming services.
Triangle AIO App
The Triangle AIO application is available for compatible iOS and Android devices.
It provides access to functions including:
- Music playback
- Streaming services
- Internet radio
- Music stored on a mobile device
- Network music libraries
- Connected AIO products
- Multiroom grouping
- Individual device volume
- Favourites
- Device naming
- Alarm settings
- Automatic power-down settings
- Wi-Fi signal information
Spotify Connect
Spotify Connect allows the AIO C to be selected directly as a playback device from within the Spotify app.
Once playback is handed to the AIO C, the network player retrieves the music rather than relying on the phone to continuously transmit ordinary audio.
This allows the phone to continue being used normally without interrupting playback.
AirPlay
Apple users can send compatible audio to the AIO C using AirPlay.
This provides a convenient route for compatible applications and audio sources from Apple devices.
Spotify, Deezer, Tidal, Qobuz and Amazon Music
Triangle lists support for major streaming services including:
- Spotify
- Deezer
- Tidal
- Qobuz
- Amazon Music
Individual services may require an appropriate account or subscription.
Internet Radio With TuneIn
TuneIn integration provides access to internet radio through the AIO platform.
This can include:
- UK radio stations
- International broadcasters
- Genre-based stations
- Specialist internet radio
Play Music From a NAS
The AIO C supports UPnP and DLNA network playback.
This allows compatible music stored on devices such as a NAS drive or network computer to be accessed across the home network.
Supported File Formats
Triangle specifies support for:
- APE
- FLAC
- WAV
- Apple Lossless / ALAC
- AAC
- AAC-LC
- HE-AAC
- HE-AAC v2
- MP3
- CBR and VBR encoded material
Triangle AIO Multiroom
The AIO C forms part of Triangle's Linkplay-based AIO multiroom system.
Compatible products can be controlled individually or grouped to play the same music in several rooms.
Compatible AIO products include:
- AIO C
- AIO 3
- AIO TWIN
- AIO PRO A50
Up to Five AIO Devices Over Wi-Fi
Triangle specifies multiroom grouping of up to five compatible devices using Wi-Fi, subject to the quality and stability of the home network.
Up to Ten Devices Over Ethernet
Using wired RJ45 network connections, Triangle specifies grouping of up to ten compatible AIO devices.
This can make Ethernet particularly useful for a larger multiroom installation.
Different Music in Different Rooms
Compatible AIO products do not have to operate as a single group.
Different devices can be controlled independently, allowing different music to play in different areas of the home.
Party Mode
Triangle's AIO platform allows several compatible products to be grouped for synchronised playback throughout the home.
This is useful when the same music is wanted in several rooms at once.
Left and Right Device Assignment
The AIO application can also assign compatible AIO products to left and right channels where the chosen product configuration supports stereo pairing.
The AIO C itself remains a stereo network source designed to feed an existing audio system.
Hotspot Function
When connected to the home network by Ethernet, the AIO C can also provide a Wi-Fi access point configured through the Triangle AIO app.
This can be useful within certain network installations.
Alarm Function
An alarm can be configured through the Triangle AIO app.
The AIO C needs to remain powered for the alarm function to operate.
Automatic Power-Down
The AIO app includes an automatic power-down setting that can stop playback while keeping the AIO C connected to the network.
Very Compact
The AIO C measures just:
- Width: 80mm
- Height: 20mm
- Depth: 80mm
It can therefore sit discreetly beside or behind an existing Hi-Fi system without requiring another full-width equipment shelf.
160g Weight
The streamer weighs approximately:
160g.
Because the enclosure is so light, make sure connected cables are positioned so they do not pull the streamer from its intended position.
External Wi-Fi Antenna
A Wi-Fi antenna is supplied with the AIO C.
Connect the antenna when using wireless networking and allow it sufficient space around surrounding equipment.
USB Power Supply
The AIO C is powered from a 5V/1A supply.
Triangle supplies:
- USB power adaptor
- USB-to-Micro-USB power cable
The Micro-USB connection provides power to the streamer. Audio is supplied through the network rather than through USB.
What's Included?
Triangle supplies:
- AIO C network player
- Wi-Fi antenna
- USB power adaptor
- USB-to-Micro-USB cable
- 3.5mm-to-3.5mm stereo cable
- 3.5mm-to-RCA stereo cable
Where Should I Put It?
Place the AIO C on a stable surface and, where practical, within reliable range of the wireless router when using Wi-Fi.
Avoid:
- Damp environments
- Direct sunlight
- Excessive heat
- Positions where connected cables place strain on the lightweight enclosure
AIO C or a Full-Size Streamer?
Triangle AIO C
- Extremely compact
- Simple network streaming
- Analogue and optical outputs
- 24-bit/192kHz network playback
- Triangle AIO multiroom
- Easy upgrade for an existing system
- App-based control
Full-Size Network Streamer
- May provide a larger display
- May offer a wider range of digital outputs
- May include USB audio or storage connections
- May support additional streaming protocols
- May use more elaborate DAC circuitry
- Usually requires more shelf space
- Typically represents a larger investment
Add Streaming to a Vintage Amplifier
One of the most useful applications for the AIO C is adding network streaming to an older amplifier.
If the amplifier has a normal line-level input such as:
the supplied 3.5mm-to-RCA cable can connect the AIO C directly.
Choosing the Correct Amplifier Input
Connect the AIO C to a normal line-level input such as AUX, CD, Tuner or Tape.
A turntable phono input uses additional gain and equalisation specifically for a phono cartridge and is not suitable for the line-level output of the AIO C.
Use With Active Speakers
The analogue output can also feed powered speakers that provide a suitable line-level analogue input.
This can create a very compact streaming system without requiring a separate integrated amplifier.
Use With an External DAC
The optical digital output allows the AIO C to operate as a compact network source with a suitable external DAC.
This can be useful where the amplifier or system already includes digital-to-analogue conversion that you wish to use.
Who Is the Triangle AIO C For?
Ideal For
- Adding streaming to an existing amplifier
- Older Hi-Fi systems
- Compact secondary systems
- Active speakers with analogue inputs
- External DAC systems
- Spotify Connect users
- AirPlay users
- Qobuz and Tidal streaming
- NAS music libraries
- Triangle AIO multiroom systems
- Internet radio
Connections and Control
- 2.4GHz Wi-Fi
- 10/100Mbps Ethernet
- 3.5mm analogue output
- Optical digital output
- Triangle AIO app
- AirPlay
- Spotify Connect
- Network-based music playback
- App-based multiroom control
Key Features
- Triangle AIO C
- Compact network streamer
- Wi-Fi music streaming
- IEEE 802.11 b/g/n
- 2.4GHz Wi-Fi
- 10/100Mbps Ethernet
- 24-bit/192kHz network playback
- 24-bit/44kHz optical output
- AirPlay
- Spotify Connect
- Spotify
- Deezer
- Tidal
- Qobuz
- Amazon Music
- TuneIn internet radio
- UPnP compatible
- DLNA compatible
- NAS playback
- Triangle AIO app
- iOS app support
- Android app support
- AIO multiroom
- Up to five grouped Wi-Fi devices
- Up to ten grouped Ethernet devices
- Multiroom synchronised playback
- Hotspot function
- Alarm function
- Automatic power-down setting
- 3.5mm stereo analogue output
- Optical Toslink output
- APE playback
- FLAC playback
- WAV playback
- ALAC playback
- AAC playback
- MP3 playback
- 5V/1A power
- Wi-Fi antenna included
- USB power adaptor included
- 3.5mm-to-RCA cable included
- 3.5mm-to-3.5mm cable included
- 80mm width
- 20mm height
- 80mm depth
- 160g weight
- Aluminium enclosure
Frequently Asked Questions
What is the Triangle AIO C?
It is a compact Wi-Fi network music streamer designed to add online and network music playback to an existing Hi-Fi system.
Does the AIO C have an amplifier?
No. It is a source component and needs to be connected to an amplifier, powered speakers or another suitable audio system.
Does it have a DAC?
Yes. Its analogue output uses internal digital-to-analogue conversion. Alternatively, the optical digital output can be connected to an external DAC.
Does it support 24-bit/192kHz?
Yes. Triangle specifies network playback up to 24-bit/192kHz.
What resolution does the optical output support?
Triangle specifies the optical output at 24-bit/44kHz.
Does it have RCA outputs?
The AIO C itself uses a 3.5mm stereo analogue output. Triangle supplies a 3.5mm-to-RCA cable for connecting it to a conventional amplifier.
Does it have an optical output?
Yes. An optical Toslink digital output is provided.
Can I use an external DAC?
Yes. Connect the AIO C's optical output to a compatible DAC.
Can I use it with an older amplifier?
Yes. Connect the analogue output to a normal line-level input such as AUX, CD, Tuner or Tape.
Can I connect it to a phono input?
No. A phono input is designed for a turntable cartridge and uses different gain and equalisation from a normal line-level input.
Does it have Bluetooth?
No. The AIO C uses Wi-Fi and Ethernet network streaming.
Does it support Wi-Fi?
Yes. Triangle specifies 2.4GHz IEEE 802.11 b/g/n Wi-Fi.
Does it have Ethernet?
Yes. A 10/100Mbps RJ45 Ethernet connection is provided.
Does it support AirPlay?
Yes.
Does it support Spotify Connect?
Yes.
Do I need to use the Triangle app for Spotify?
No. Spotify Connect allows the AIO C to be selected directly from within the Spotify app.
Does it support Qobuz?
Yes.
Does it support Tidal?
Yes.
Does it support Deezer?
Yes.
Does it support Amazon Music?
Yes. Triangle lists Amazon Music among the supported services.
Does it have internet radio?
Yes. TuneIn internet radio is supported.
Can it play music from a NAS?
Yes. UPnP and DLNA network playback are supported.
Which audio formats does it support?
Triangle lists APE, FLAC, WAV, Apple Lossless, AAC variants and MP3, including CBR and VBR encoded material.
Does it support FLAC?
Yes.
Does it support Apple Lossless?
Yes. ALAC is supported.
What is Triangle AIO Multiroom?
It allows compatible Triangle AIO products around the home to be controlled individually or grouped for synchronised playback.
How many AIO products can be grouped?
Triangle specifies up to five over Wi-Fi or up to ten using wired Ethernet connections, subject to the quality of the network.
Which Triangle products work in the same AIO system?
Triangle lists the AIO C, AIO 3, AIO TWIN and AIO PRO A50 as compatible products within the Linkplay-based AIO system.
Can different rooms play different music?
Yes. Compatible AIO products can be controlled independently as well as grouped.
Can several rooms play the same music?
Yes. Compatible AIO products can be grouped for synchronised playback.
Does it have an alarm?
Yes. The Triangle AIO app provides an alarm function.
What is the Hotspot function?
When connected to the network by Ethernet, the AIO C can provide a Wi-Fi access point configured through the Triangle AIO app.
Does it have a USB audio input?
No. The Micro-USB connection is used to power the AIO C.
What power supply does it use?
5V/1A.
Is the power adaptor supplied?
Yes.
How large is the AIO C?
Approximately 80 x 20 x 80mm W x H x D.
How much does it weigh?
Approximately 160g.
What cables are supplied?
Triangle supplies a 3.5mm-to-3.5mm stereo cable, 3.5mm-to-RCA cable, USB-to-Micro-USB power cable and USB power adaptor.
Is the Wi-Fi antenna supplied?
Yes.
Is an optical cable supplied?
No optical cable is listed among the supplied accessories.
Does it come with a handheld remote?
No. Everyday control is primarily handled through the Triangle AIO app and compatible network services.
What warranty does Triangle provide?
Triangle provides a two-year warranty, subject to its terms and conditions.
Related Triangle Products and Audio T Guides
Why Buy From Audio T?
- Triangle product advice
- Streaming-service setup
- Wi-Fi and Ethernet setup advice
- Existing amplifier integration
- Vintage amplifier compatibility
- Analogue and digital connection advice
- External DAC matching
- NAS and network music setup
- Multiroom system planning
- Triangle AIO system advice
- Setup and ongoing after-sales support
Contact your local Audio T store if you need help adding the Triangle AIO C to an existing amplifier, choosing between analogue and digital connection or planning a multiroom streaming system.