uStream Cube compact wireless stereo speaker pair
uStream Cube compact wireless stereo speaker pair

uStream Cube

Your soundbar's replacement is already here.

uStream Cube from Mitchell Acoustics is a compact pair of true wireless stereo speakers, built to replace a TV soundbar with real left and right stereo. Each speaker runs a 106mm magnesium alloy driver with 35W RMS of Texas Instruments Class D amplification, 70W RMS for the pair. They pair with each other automatically when switched on, with no app and no Wi-Fi. Connect by HDMI ARC, Bluetooth 5.3 or a 3.5mm aux input. 2-year warranty.

Most people replaced their hi-fi with a soundbar and called it progress. The uStream Cube puts proper stereo back in the room: two separate speakers, left and right, connected to each other wirelessly, with no cable between them. Switch them on and they pair in seconds. No app. No configuration. Just stereo.

BUILD The 106mm magnesium alloy driver has a smooth, flush-fitted cone that delivers its sound without softening it. Bass with real weight from a compact cabinet. A midrange that does not disappear when you turn the volume up. Texas Instruments Class D amplification at 35W RMS per speaker, the same chipset trusted by professional monitor manufacturers.

CONNECTIVITY Connect to your TV via HDMI ARC and the uStream Cube becomes your television's sound system, controlled by the same remote you already use. The 3.5mm aux input takes anything else you want to plug in. Bluetooth 5.3 handles phone, tablet, and laptop without an app, without a pairing process, without thinking about it.

SMART HOME Set it as your default Alexa or Google Home speaker and your music follows every voice command. Add a WiiM Mini for AirPlay 2 and hi-res audio without any additional wiring. The uStream Cube is the entry point to a system that grows with you.

Specifications

70W

RMS POWER

BT 5.3

True Wireless

30Hz

Freq. Response

Stereo

True 2.0 Channels

AUDIO

CONNECTIVITY

POWER

PHYSICAL

IN THE BOX

Audio

RATED POWER OUTPUT

35W RMS per speaker (70W RMS total system output)

TOTAL RMS POWER

70W RMS (35W per channel)

THD

< 0.5% at 1W / 1kHz

Impedance

4Ω

Frequency Response

30Hz – 18kHz

SNR

> 75dB

SPEAKER Driver

106mm (4") driver

Diaphragm

Magnesium Alloy

Voice Coil

Proprietary design [20oz (566g) neodymium magnet]

Amplifier

Texas Instruments Class D, 35W

  • Trusted Reviews

    "A confident, musically satisfying and refreshingly uncomplicated system"

    Bristol Hi-Fi Show

    Exhibitor

    What Hi-Fi? France (translated)

    "Hard to find better value for money today"

    T3 France (translated)

    "Probably the best Bluetooth speakers you've ever heard"
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Designed in Britain · Built for the world

Bringing true stereo Hi-Fi back to the way you live today.

© 2026 Mitchell Acoustics. All rights reserved.

Designed in Britain · Built for the world

Designed in Britain · Built for the world

Bringing true stereo Hi-Fi back to the way you live today.

© 2026 Mitchell Acoustics. All rights reserved.

Designed in Britain · Built for the world

Bringing true stereo Hi-Fi back to the way you live today.

© 2026 Mitchell Acoustics. All rights reserved.

Designed in Britain · Built for the world