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Sonos Sub Gen3 White Certified Refurbished – Premium Wireless Subwoofer – Wifi Refurbished

Updated at 18:52 on 5 November 2026
£364
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Sonos Sub (Gen 3) Wireless Subwoofer White
The Sonos Sub (Gen 3) is a wireless subwoofer designed to add a bit more depth and punch to your home audio setup.
It connects over Wi-Fi, keeping things tidy without the need for a traditional audio cable.
Its finished in white, with a modern cube-shaped design that should fit in nicely with most living rooms.
The main selling point is its bass performance, with a frequency response reaching as low as 25Hz.
It should make a noticeable difference when watching films, especially during action scenes and deeper sound effects.
Music should benefit too, with extra low-end presence without having to rely solely on your main speakers.
Sonos Trueplay technology helps optimise the sound to suit the room its placed in.
Its designed to work with compatible Sonos products, so its worth checking your existing setup before buying.
The wireless connection also gives you more flexibility when deciding where to position it.
At around 29lb, its fairly substantial, so its not something youll want to move around too often.
Its dimensions are approximately 15.3 inches high, 15.8 inches wide and 6.2 inches deep, according to the supplied specifications.
The design is quite understated, so it shouldnt look too out of place alongside other home entertainment equipment.
It was manufactured in 2020 and originally came with a two-year manufacturers warranty, although coverage may have expired depending on the purchase date.
My opinion is that its a decent upgrade for anyone already using a compatible Sonos system and wanting fuller, more powerful bass.

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