Audio T Verdict
The Triangle AIO TWIN is one of those systems that manages to remove a lot of Hi-Fi boxes without removing the things that make a proper stereo system useful.
Inside the pair is 2 x 50W of Class D amplification, network streaming up to 24-bit/192kHz, Bluetooth aptX HD, an MM phono stage for a turntable, analogue inputs, optical digital input for a television, USB flash-drive playback and a subwoofer output.
More importantly, these are two proper separate loudspeakers rather than a one-box wireless speaker attempting to create stereo through digital processing. That gives you genuine physical left and right separation and considerably more freedom when positioning them in a room.
Each cabinet uses a 130mm mid/bass driver and 25mm silk-dome tweeter, with Triangle specifying a 56Hz to 22kHz ±3dB response. The system is recommended for rooms up to around 25m², although the subwoofer output gives you an easy route to greater low-frequency weight if the room or your music demands it.
One speaker acts as the Master and contains the amplifier, network hardware and source connections. The second speaker remains passive and connects to the Master with the supplied 3m speaker cable. So while your music can arrive wirelessly through Wi-Fi or Bluetooth, the two speakers themselves are connected by cable.
The integrated MM phono stage is particularly welcome. A conventional turntable fitted with a moving-magnet cartridge can be connected directly without adding a separate phono stage, while a line-level input remains available for other analogue sources.
TV integration is through optical rather than HDMI ARC, which means the AIO TWIN does not offer the same automatic television-volume behaviour as an HDMI-equipped soundbar or active speaker system. For music-first users who simply want much better stereo TV sound as well, however, it remains a very neat solution.
Add the Triangle AIO app, AirPlay, Spotify Connect, Qobuz, Tidal, Deezer, Amazon Music, internet radio and multiroom, and the AIO TWIN effectively becomes an entire modern Hi-Fi system contained within a pair of compact bookshelf speakers.
Triangle AIO TWIN Active Wireless Speakers
The AIO TWIN combines a traditional two-speaker stereo layout with amplification, network streaming and a wide range of analogue and digital connections.
Key features include:
- Active stereo speaker system
- 2 x 50W Class D amplification
- 25mm silk-dome tweeter per speaker
- 130mm mid/bass driver per speaker
- 56Hz to 22kHz ±3dB response
- Recommended for rooms up to approximately 25m²
- Wi-Fi network streaming up to 24-bit/192kHz
- Bluetooth 5.0
- aptX
- aptX HD
- aptX Low Latency
- AAC and SBC Bluetooth codecs
- Spotify Connect
- AirPlay
- Triangle AIO multiroom
- UPnP and DLNA network playback
- Internet radio via TuneIn
- Integrated moving-magnet phono stage
- RCA analogue connection
- 3.5mm analogue input
- Optical digital input
- USB-A flash-drive playback
- Subwoofer output
- Ethernet network connection
- Infra-red remote control supplied
- 3m speaker cable supplied
A Complete Hi-Fi System in Two Speakers
The AIO TWIN can replace several separate Hi-Fi components.
A conventional system might require:
- Network streamer
- DAC
- Integrated amplifier
- Phono stage
- Bluetooth receiver
- Pair of passive speakers
The AIO TWIN brings most of those functions together into one stereo loudspeaker system.
One Active Master Speaker
One AIO TWIN cabinet acts as the Master speaker.
It contains:
- Class D amplification
- Network streamer
- Bluetooth receiver
- Phono stage
- Analogue inputs
- Optical input
- USB playback
- Subwoofer output
- Ethernet connection
The Second Speaker Connects by Cable
The second speaker receives its amplified signal from the Master through a conventional speaker cable.
Triangle supplies a 3m cable with the system.
The Speakers Are Not Wirelessly Linked
Wi-Fi and Bluetooth refer to the way music reaches the Master speaker.
The left and right AIO TWIN cabinets are connected to one another using speaker cable.
Need More Than 3 Metres Between the Speakers?
Triangle states that conventional speaker cable can be substituted where a different length is required.
This gives you more flexibility than a proprietary fixed inter-speaker cable.
Audio T can advise on an appropriate cable and sensible maximum length for your installation.
2 x 50W Class D Amplification
The integrated amplifier produces:
2 x 50 watts RMS.
One amplifier channel drives each loudspeaker.
Because Triangle controls both the amplifier and loudspeaker design, there is no need to separately calculate amplifier power or electrical speaker compatibility.
25mm Silk-Dome Tweeter
Each cabinet uses a 25mm silk-dome tweeter for high-frequency reproduction.
Soft-dome tweeters are widely used in Hi-Fi because their light diaphragm can reproduce the treble range while remaining well controlled.
130mm Mid/Bass Driver
A 130mm mid/bass unit handles the majority of the musical range and low frequencies.
The combination gives Triangle a quoted overall response of:
56Hz – 22kHz ±3dB.
56Hz Bass Extension
For compact bookshelf speakers, a properly qualified 56Hz lower limit provides useful bass extension for everyday music listening.
You may still want a subwoofer if you regularly listen to:
- Electronic music
- Large-scale orchestral recordings
- Pipe organ
- Bass-heavy rock
- Films and television
Subwoofer Output
A dedicated subwoofer output allows an active subwoofer to be added without replacing the speakers.
Triangle recommends models such as its Talès 340, although other suitable active subwoofers can also be considered.
Adding a Subwoofer Is About Integration
More bass is not automatically better bass.
Correct level, crossover setting and room position are important if the subwoofer is to extend the system without drawing attention to itself.
Recommended for Rooms Up to 25m²
Triangle recommends the AIO TWIN for listening rooms up to approximately 25 square metres.
That is a useful guide rather than a hard limit because room acoustics and listening distance also affect how much output a system needs.
For substantially larger spaces, Triangle recommends either adding a subwoofer or considering a larger active speaker.
24-Bit/192kHz Wi-Fi Streaming
The AIO TWIN supports network playback up to:
24-bit / 192kHz.
This allows compatible high-resolution music from streaming services or network storage to be played without the system being restricted to CD-quality data.
Resolution Depends on the Music Source
The maximum specification does not mean every song will play at 24-bit/192kHz.
Actual resolution depends on:
- The original recording
- The streaming service
- Your subscription
- The particular release
- The source device
- The connection method
Bluetooth 5.0
Bluetooth provides the quickest way to play music from a compatible phone, tablet or computer without first configuring network streaming.
Triangle specifies:
- Bluetooth 5.0
- aptX
- aptX HD
- aptX Low Latency
- AAC
- SBC
aptX HD
aptX HD allows compatible Bluetooth transmitters to send higher-resolution audio than the basic SBC codec.
Triangle specifies Bluetooth HD playback at up to:
24-bit / 44kHz.
Both the source and receiver must support the appropriate codec for it to be used.
aptX Low Latency
aptX Low Latency is designed to reduce the delay between picture and sound when used with a compatible transmitting device.
This can be useful for video playback, although the optical input remains the more appropriate permanent TV connection.
Wi-Fi or Bluetooth?
Wi-Fi
- Up to 24-bit/192kHz
- Streaming services
- Multiroom
- NAS playback
- Spotify Connect
- AirPlay
- Best option for regular home listening
Bluetooth
- Fast direct pairing
- No network setup required
- aptX HD supported
- aptX Low Latency supported
- Useful for guests
- Maximum Triangle spec 24-bit/44kHz
2.4GHz Wi-Fi
Triangle specifies IEEE 802.11 b/g/n Wi-Fi on the 2.4GHz band.
2.4GHz Wi-Fi Required
The AIO TWIN uses 2.4GHz Wi-Fi. Make sure your router provides a compatible 2.4GHz network during setup.
Ethernet Connection
A 10/100Mbps RJ45 network connection is provided for a wired installation.
Ethernet is worth considering where:
- Wi-Fi reception is weak
- The speakers are far from the router
- The building has substantial walls
- Several multiroom products are being grouped
- Network reliability is a priority
Triangle AIO App
The Triangle AIO application is available for compatible iOS and Android devices.
It gives access to:
- Streaming services
- Network music
- Internet radio
- Multiroom grouping
- Individual AIO devices
- Volume control
- Equaliser adjustment
- Alarm functions
- Auto-sleep settings
Spotify Connect
Spotify Connect allows the AIO TWIN to be selected directly from the Spotify app.
The speakers then retrieve the music stream over the network rather than relying on the phone to transmit ordinary Bluetooth audio.
AirPlay
Apple devices can stream compatible audio to the AIO TWIN using AirPlay.
AirPlay Compatibility
The AIO TWIN supports AirPlay. AirPlay 2 is not specified for this model, so features that specifically require AirPlay 2 should not be assumed.
Streaming Services
Triangle currently lists support within the AIO platform for:
- Spotify
- Deezer
- Tidal
- Qobuz
- Amazon Music
- TuneIn internet radio
Service availability can change over time and may depend on country, account type and subscription.
Qobuz and Tidal
The inclusion of Qobuz and Tidal makes the AIO TWIN particularly useful where high-resolution or lossless streaming forms the main source of the system.
Available quality depends on the service, subscription and recording.
Internet Radio With TuneIn
TuneIn provides access to a large range of online radio stations and internet broadcasts from around the world.
UPnP and DLNA Playback
The AIO TWIN can access compatible music libraries stored elsewhere on the home network.
This can include music held on:
- NAS drives
- Computers
- Compatible media servers
Supported Music Files
Triangle currently lists:
- APE
- FLAC
- WAV
- Apple Lossless / ALAC
- AAC
- AAC-LC
- HE-AAC
- HE-AAC v2
- MP3
- CBR and VBR files
Triangle AIO Multiroom
The speakers form part of Triangle's Linkplay-based AIO ecosystem.
Compatible products can be grouped for synchronised playback around the home.
Current AIO products include:
- AIO TWIN
- AIO 3
- AIO C
- AIO PRO A50
Up to Five AIO Devices Over Wi-Fi
Triangle specifies multiroom grouping of up to five compatible devices over Wi-Fi, subject to network conditions.
Up to Ten Over Ethernet
When wired by Ethernet, Triangle specifies grouping of up to ten compatible products.
Integrated MM Phono Stage
The AIO TWIN includes a built-in moving-magnet phono preamplifier.
This allows a conventional turntable fitted with a suitable MM cartridge to be connected directly without adding a separate phono stage.
What Does a Phono Stage Do?
A phono cartridge produces a much smaller signal than an ordinary line-level source and requires RIAA equalisation.
The built-in MM stage provides the additional amplification and equalisation required before the signal reaches the main amplifier.
Moving Magnet, Not Moving Coil
Triangle specifies an MM phono preamplifier.
A conventional low-output moving-coil cartridge will normally require an appropriate external MC phono stage.
Can I Connect a Turntable With a Built-In Phono Stage?
Potentially, but the turntable's built-in phono stage should feed a line-level input rather than being amplified by a second MM phono stage.
Check the turntable's output mode and the AIO TWIN input arrangement before connection.
Triangle and Pro-Ject Turntable System
Triangle has also worked with Pro-Ject on turntable packages designed to complement the AIO TWIN.
You are not restricted to that particular turntable, however. Any suitably compatible turntable and MM cartridge can be considered.
3.5mm Analogue Input
A 3.5mm stereo mini-jack input provides an easy connection for another analogue source.
This can be useful for:
- Portable audio players
- CD players with suitable output
- Older network players
- Other line-level sources
Optical Input for TV
The AIO TWIN includes an optical S/PDIF input intended for televisions and other digital sources.
Triangle specifies optical playback up to:
24-bit / 192kHz.
A Proper Stereo Alternative to a Soundbar
Connecting a television through optical gives you genuine left and right speakers rather than putting the whole front soundstage inside one cabinet beneath the screen.
Potential benefits include:
- Wider stereo separation
- More flexible speaker placement
- More natural music reproduction
- Clearer separation of dialogue and effects
- Ability to use the same system for serious music listening
No HDMI ARC
The AIO TWIN uses an optical connection for television sound.
Triangle does not specify HDMI ARC or HDMI eARC on this model.
TV remote volume control behaviour therefore depends on the television and installation rather than the HDMI-CEC control used by modern HDMI soundbars.
USB-A Flash Drive Playback
A USB-A port allows compatible music stored on a USB flash drive to be played through the system.
USB-A Is Not a USB DAC Input
The connection is intended for compatible USB storage rather than connecting a computer directly as an asynchronous USB audio source.
Infra-Red Remote Control
An infra-red handset is supplied for everyday control without requiring a phone or tablet.
The Triangle AIO app remains useful for streaming, multiroom and network functions.
Equaliser
The AIO platform includes EQ adjustment through the app.
This can help make small tonal adjustments for:
- Room acoustics
- Speaker position
- Personal preference
Try improving physical speaker placement before making large EQ corrections.
Speaker Positioning
The AIO TWIN should be treated like a normal pair of bookshelf speakers rather than simply placed wherever there happens to be a mains socket.
Try to keep:
- Left and right speakers at similar heights
- Reasonably equal distances from the listening position
- Useful space around the cabinets
- The front of each speaker clear from furniture
Use Proper Speaker Stands Where Possible
A suitable stand can place the tweeter closer to seated ear height and keep both cabinets at matching levels.
Stable stands can also provide more flexibility in positioning than placing the speakers permanently on furniture.
Aluminium Feet With Rubber Pads
Triangle fits aluminium feet with rubber pads beneath the cabinets.
These help protect furniture surfaces and provide a controlled interface when the speakers are placed on a shelf, desk or sideboard.
High-Density Cabinet Construction
Triangle uses a high-density particle-board enclosure rather than a lightweight moulded plastic cabinet.
The aim is to provide sufficient rigidity and minimise unwanted cabinet contribution to the reproduced sound.
Gabriel Bond Fabric
The grille uses Bond textile from Danish fabric specialist Gabriel.
The material forms an important part of the AIO TWIN's distinctive appearance and is matched to the different cabinet finishes.
Magnetic Grilles
Two magnetic fabric grilles are supplied.
They can be removed easily without leaving conventional grille pegs visible on the front of the cabinet.
Compact Dimensions
Each speaker measures:
- Width: 165mm
- Height: 304mm
- Depth: 235mm
That makes the AIO TWIN compact enough for smaller rooms while still providing genuine stereo separation.
5kg Per Speaker
Triangle specifies approximately 5kg per cabinet.
The complete packed pair weighs approximately 11.5kg.
Current Finish Options
Triangle's current product range includes:
- Graphite Black
- Frosted White
- Linen Grey
- Abyss Blue
- Brown Maple
- English Green
- Macassar
Macassar Real-Wood Veneer
Macassar is Triangle's newer premium finish for the AIO TWIN.
Triangle describes it as a real wood veneer inspired by Macassar ebony.
As a natural veneer, visible grain and appearance can vary from one pair to another.
AIO TWIN or AIO C?
AIO TWIN
- Complete active stereo system
- 2 x 50W amplification
- Speakers included
- Bluetooth
- Wi-Fi streaming
- MM phono stage
- Optical TV input
- USB flash-drive playback
- Subwoofer output
AIO C
- Compact network streamer
- No speakers
- No power amplifier
- No Bluetooth
- Wi-Fi streaming
- Analogue output
- Optical digital output
- Designed to upgrade an existing Hi-Fi system
Compare the Triangle AIO C at Audio T.
AIO TWIN or a Soundbar?
AIO TWIN
- True stereo speaker separation
- Music-first design
- MM phono stage
- High-resolution network streaming
- Subwoofer output
- Flexible left/right placement
- Optical TV connection
Typical Soundbar
- Single-cabinet installation
- Usually simpler beneath a television
- Often includes HDMI ARC or eARC
- May provide Dolby Atmos processing
- Smaller physical stereo width
- Usually fewer traditional Hi-Fi inputs
If music is as important as television sound, a pair of active stereo speakers can make considerably more sense than a conventional soundbar.
Who Is the Triangle AIO TWIN For?
Well Suited To
- First proper Hi-Fi systems
- Compact living rooms
- Rooms up to around 25m²
- Streaming-first systems
- Spotify Connect users
- Qobuz and Tidal users
- Bluetooth listening
- Turntable systems
- Improving TV sound
- Multiroom audio
- Desktop or home-office systems
- Listeners wanting fewer Hi-Fi boxes
Check Before Buying
- Left and right speakers require speaker cable between them
- Master speaker requires mains power
- No HDMI ARC or eARC
- 2.4GHz Wi-Fi specification
- AirPlay supported; AirPlay 2 is not specified
- Phono stage is moving magnet
- USB-A is for storage, not USB DAC use
- 56Hz lower-frequency specification
- Subwoofer worthwhile for significantly deeper bass
Key Features
- Triangle AIO TWIN
- Active stereo speakers
- 2 x 50W RMS Class D amplification
- Master and passive speaker configuration
- 3m speaker cable included
- 25mm silk-dome tweeter
- 130mm mid/bass driver
- 56Hz–22kHz ±3dB
- Rooms up to approximately 25m²
- Wi-Fi streaming
- 24-bit/192kHz network playback
- 2.4GHz Wi-Fi
- 10/100Mbps Ethernet
- Bluetooth 5.0
- aptX
- aptX HD
- aptX Low Latency
- AAC Bluetooth
- SBC Bluetooth
- 24-bit/44kHz Bluetooth HD specification
- AirPlay
- Spotify Connect
- Spotify
- Deezer
- Tidal
- Qobuz
- Amazon Music
- TuneIn internet radio
- UPnP
- DLNA
- Triangle AIO multiroom
- Up to five Wi-Fi multiroom devices
- Up to ten Ethernet multiroom devices
- Integrated MM phono preamplifier
- RCA / phono connection
- 3.5mm analogue input
- Optical S/PDIF input
- 24-bit/192kHz optical specification
- USB-A flash-drive input
- Subwoofer output
- Infra-red remote supplied
- EQ control
- Alarm function
- Auto-sleep function
- Wi-Fi repeater function
- 165mm width
- 304mm height
- 235mm depth
- 5kg per speaker
- Magnetic fabric grilles
- Aluminium feet
- Gabriel Bond textile
Frequently Asked Questions
Are the Triangle AIO TWIN speakers active?
Yes. The system contains 2 x 50W of Class D amplification.
Are both speakers powered?
One speaker is the active Master containing the electronics and amplification. The second speaker receives its amplified signal from the Master.
Are the two speakers wirelessly connected?
No. They are connected with speaker cable.
How long is the supplied speaker cable?
Approximately 3 metres.
Can I use a longer cable?
Yes. Triangle states that standard speaker cable can be substituted where a different length is required.
How powerful are the AIO TWIN speakers?
Triangle specifies 2 x 50W RMS Class D amplification.
What drivers do they use?
Each speaker uses a 25mm silk-dome tweeter and 130mm mid/bass driver.
What is the frequency response?
56Hz to 22kHz ±3dB.
How large a room are they designed for?
Triangle recommends them for rooms up to approximately 25m².
Can I use them in a larger room?
Potentially, but Triangle suggests adding a subwoofer or considering a larger active speaker if greater scale is required.
Do they support high-resolution streaming?
Yes. Wi-Fi playback is specified up to 24-bit/192kHz.
Does Bluetooth play at 24-bit/192kHz?
No. Triangle specifies Bluetooth HD at up to 24-bit/44kHz.
What Bluetooth version do they use?
Bluetooth 5.0.
Do they support aptX HD?
Yes.
Do they support aptX Low Latency?
Yes.
Do they support AirPlay?
Yes.
Do they support AirPlay 2?
Triangle's current specification states AirPlay but does not specifically identify AirPlay 2.
Do they support Spotify Connect?
Yes.
Do they support Qobuz?
Yes.
Do they support Tidal?
Yes.
Do they support Amazon Music?
Triangle's current technical specification lists Amazon Music.
Do they support internet radio?
Yes. TuneIn is integrated into the AIO platform.
Can they play music from a NAS?
Yes. UPnP and DLNA network playback are supported.
Can I connect a turntable directly?
Yes, when using a suitable moving-magnet cartridge. The AIO TWIN includes an integrated MM phono preamplifier.
Can I use a moving-coil cartridge?
A conventional low-output MC cartridge will normally require a suitable external MC phono stage feeding a line-level input.
Can I connect a turntable with a built-in phono stage?
Yes, provided it is connected as a line-level source rather than passing through two phono stages. Check the turntable output setting before connection.
Can I connect a TV?
Yes. Use the optical S/PDIF input.
Do they have HDMI ARC?
No.
Do they have HDMI eARC?
No.
What resolution does the optical input support?
Triangle specifies up to 24-bit/192kHz.
Can I add a subwoofer?
Yes. A dedicated subwoofer output is provided.
Do I need a Triangle subwoofer?
No. Triangle recommends models such as the Talès 340, but other suitable active subwoofers can be considered.
Does it have USB?
Yes. A USB-A connection supports compatible flash-storage playback.
Can I connect my computer by USB and use the AIO TWIN as a USB DAC?
No USB DAC input is specified. The USB-A connection is intended for storage devices.
Does it have an analogue input?
Yes. RCA/phono and 3.5mm analogue connections are provided.
Does it have Ethernet?
Yes. A 10/100Mbps network connection is fitted.
Does it support 5GHz Wi-Fi?
Triangle specifies 2.4GHz IEEE 802.11 b/g/n Wi-Fi and does not list 5GHz support.
What is Triangle AIO multiroom?
Compatible AIO products can be grouped across the home for synchronised playback or controlled independently.
How many AIO devices can be grouped?
Triangle specifies up to five over Wi-Fi and up to ten over Ethernet, subject to network performance.
Is there an app?
Yes. The Triangle AIO app is available for compatible iOS and Android devices.
Is a remote control supplied?
Yes. An infra-red remote is included.
Can I adjust bass and treble?
The AIO platform includes equaliser adjustment through the app.
How large is each speaker?
Approximately 165 x 304 x 235mm W x H x D.
How much does each speaker weigh?
Approximately 5kg.
What finishes are currently available?
Triangle currently lists Graphite Black, Frosted White, Linen Grey, Abyss Blue, Brown Maple, English Green and Macassar.
What is Macassar?
Triangle describes Macassar as a real wood veneer inspired by Macassar ebony, so natural variation should be expected.
What warranty does Triangle provide?
Triangle provides a two-year standard warranty. Registration extends eligible active products by an additional year, giving up to three years of cover subject to Triangle's current conditions.
Related Triangle Products and Audio T Guides
Why Buy From Audio T?
- Triangle product demonstrations
- Active-speaker system advice
- Wi-Fi and network setup
- Bluetooth setup
- Streaming-service configuration
- Turntable and cartridge matching
- MM phono setup
- TV optical connection advice
- Subwoofer integration
- Speaker stand and positioning advice
- Multiroom system planning
- Audio T setup and after-sales support
Contact your local Audio T store to arrange a Triangle AIO TWIN demonstration or discuss turntables, streaming, television connection, speaker positioning and subwoofer options.