uStream Cube
Your soundbar's replacement is already here.
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 sits behind a dust cap that protects it without softening what it delivers. Bass that does not need a subwoofer. 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 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 Cube is the entry point to a system that grows with you.
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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 woofer + 15W RMS tweeter per speaker (100W RMS total system output)
DYNAMIC POWER
100W RMS (50W per channel)
THD
< 0.5% at 1W / 1kHz
Impedance
8Ω
Frequency Response
33Hz – 20kHz
SNR
> 82dB
SPEAKER Driver
106mm (4") bass, 38mm (1.5") treble
Diaphragm
Magnesium Alloy bass/mid · Silk composite tweeter
Voice Coil
Proprietary design [20oz (566g) neodymium magnet]
Amplifier
Texas Instruments TPA-3116D2 Class D — 50W
The uStream range
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The Sunday Times
"The speaker to beat at this price"
Trusted Reviews
"Smart Home audio done right"
Bristol Sound & Vision Show
Featured exhibitor 2026
What Hi-Fi?
"Genuinely impressive wireless stereo"