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How aaro works

Sixteen drivers, sixteen amplifier channels, a room-measurement system and a spatial renderer, designed together from the start.

Treble ring6 electrostatic panelsHeight pair2 up-firing driversMidrange ring6 drivers, one per directionBass section2 opposed woofers, 4.5 L sealedBase16 amplifier channels, processing, the sensing switch 12345
  1. Treble ring
    6 electrostatic panels
  2. Height pair
    2 up-firing drivers
  3. Midrange ring
    6 drivers, one per direction
  4. Bass section
    2 opposed woofers, 4.5 L sealed
  5. Base
    16 amplifier channels, processing, the sensing switch

Six directions, controlled separately

Bass leaves aaro one equally in every direction. Above it, six midrange drivers and six electrostatic panels divide the circle into six sectors, each with its own amplifiers and filters.

That control lets one speaker fill a room evenly, and lets many speakers act as a single sound field.

Top view of aaro one: six electrostatic panels and six midrange drivers divide the circle into six sectors, each playing outward in its own direction; two height drivers fire upward; two woofers lower down face apart. 6 electrostatic panelstreble, one per sector 2 height driversfiring up, 20° out 2 opposed wooferslower, facing apart 6 midrange driversbelow each panel

Signal path

Every sound takes the same path through the speaker. The protection stages keep running if the app or the internet goes away.

Signal path: input, a shared clock, room tuning, the renderer, crossovers, protection, sixteen amplifier channels and the drivers.InputStreams, TV,BluetoothClock20 µs withina pairRoom tuningper seat,bass firstRendererchannels andobjectsCrossoversband, level,delayProtectionexcursion,current, heat16 amplifiersone perdriverDrivers2 + 6 + 6 + 2InputStreams, TV, BluetoothClock20 µs within a pairRoom tuningper seat, bass firstRendererchannels and objectsCrossoversband, level, delayProtectionexcursion, current, heat16 amplifiersone per driverDrivers2 + 6 + 6 + 2
Clock
Speakers share one clock over Wi-Fi 6E or Ethernet: left and right stay within 20 microseconds of each other, a whole group within a millisecond.
Response
Volume changes land in under 150 milliseconds, and music starts from standby in under two seconds.

Room tuning

Bass in a room is a pattern of peaks and gaps that changes from seat to seat. Instead of correcting one spot, aaro measures the room and adjusts every speaker together, so the whole sofa hears the same balance.

Louder than at the seats, every 3 dBQuieter than at the seats

Bass at 71 Hz across a 6 × 4.8 m room with four aaro one, modelled. Across the sofa it varies by 14 dB before tuning and 4 dB after. Clear floor is even.

Bass first
The strongest correction sits below about 500 Hz, where rooms do the most damage.
No deep boosts
A gap that filters can't fill becomes placement advice, not more power.
Fair comparisons
Before and after always play at the same loudness.
Profiles
Reference, Warm, Low volume, Late night and Cinema.
On the speaker
Your tuning is stored locally and works without the internet or an account.
Bass response at three seats on the sofa, 20 to 250 hertz. Before tuning the seats differ by 3.8 dB on average; after tuning, by 0.8 dB. 20305070100150250-18-12-60+6 Hz dB

Before tuning, three seatsAfter tuning

The same tuning across 20 to 250 Hz: on average the seats differ by 3.8 dB before and 0.8 dB after.

Sensing and privacy

The sensors exist to make the sound better. Everything they measure is processed on the speaker.

Sensing onMicrophones and presence sensors are connected.
What it senses
Six microphones measure the room and hear the wake word. Four millimetre-wave sensors register people as points in space, never images.
What it keeps
Room measurements and your tuning. Raw room audio is never stored.
What the switch does
It disconnects every microphone and sensor in hardware. Playback, pairing and saved tuning keep working.
When audio leaves
Only for optional voice features, and a light on the speaker shows whenever it does.

Repair and updates

An expensive speaker shouldn't stop working when a server changes. aaro plays locally, updates safely and can be repaired.

Replaceable parts
The network board, amplifier module, microphones, knit and feet come out without opening the acoustic chamber.
Safe updates
Every update is signed and rolls back automatically if anything goes wrong.
Seven years
Software and security updates for seven years from the last day a model is sold.
No account needed
Local playback, tuning and stereo pairs work without signing in.

Compatibility

aaro uses each service's own approved connection, so playback stays at full quality and your apps stay in control.

AirPlay
From iPhone, iPad and Mac, including multiroom
Spotify Connect
Control from the Spotify app on any device
TIDAL and Qobuz Connect
Lossless and hi-res streams, played directly by the speaker
Roon Ready
For your own library and Roon's signal path
Bluetooth
For guests and quick sharing
TV and wired
Optical and USB-C inputs, and a subwoofer output for third-party subwoofers
Smart home
Imersa scenes, Home Assistant and a documented local API