The Sonos Sub Mini is a compact and powerful subwoofer designed for small to mid-sized rooms, delivering the signature deep, room-filling bass that Sonos is known for, but in a more accessible and affordable package than the larger Sonos Sub.DesignThe Sub Mini has a sleek, minimalist cylindrical design that complements other Sonos speakers and fits well into modern home setups. Available in matte black or white, it’s compact enough to be discreet, yet stylish enough to stand out as part of your audio system. The compact design is ideal for smaller spaces, where the larger Sonos Sub might feel excessive.Sound QualityDespite its smaller size, the Sub Mini delivers impressive bass depth and clarity, thanks to its dual 6-inch force-canceling woofers. These woofers are placed face-to-face to eliminate unwanted vibrations, so you get clean, thumping bass without any distortion. The Sub Mini is specifically designed to enhance the low end of Sonos soundbars like the Sonos Ray or Beam (Gen 2), or Sonos speakers, by taking on the bass frequencies and letting the main speakers focus on mids and highs, resulting in a balanced, immersive listening experience. It’s excellent for movie soundtracks, gaming, and music genres that demand deep bass.Setup & IntegrationSetting up the Sub Mini is a breeze via the Sonos app, which automatically calibrates the subwoofer to your room’s acoustics. It connects wirelessly to other Sonos devices, making it simple to add to an existing setup without needing to fuss with cables. The Trueplay feature, available on iOS, fine-tunes the sound based on your room’s acoustics, optimizing the bass for any layout.PerformanceThe Sub Mini performs best in smaller or mid-sized rooms, where it can produce a full-bodied bass response that doesn’t overpower the other frequencies. While it doesn’t have the same thunderous impact as the larger Sonos Sub, it still significantly enhances the low end in a way that’s noticeable and enjoyable. For users in larger spaces or those who crave wall-shaking bass, the standard Sonos Sub may be a better choice.Overall VerdictThe Sonos Sub Mini is a solid addition to the Sonos ecosystem, offering rich, deep bass in a compact form factor. It’s perfect for users with small to medium rooms who want to elevate their audio experience without investing in the larger (and pricier) Sonos Sub. Ideal for enhancing the Sonos Beam or Ray, the Sub Mini brings impressive bass in a thoughtfully designed, easy-to-integrate package that’s both accessible and powerful for the size.

I have the main bass unit from Sonos for my tv and dvd set up. I wanted a separate system for my cd and radio set up – something I could switch on and off quickly without having to go into the app. So I have two Play 1’s and this mini bass. It’s perfect! It’s a medium sized room and fills the space with bass effortlessly. Setting up was a breeze although it’s the first time I’d tapped the top with my phone as part of the registration process, using the same near-field technology that our credit cards use when tapping terminals with the phone. I didn’t quite believe it had worked as a second or two delay occurred (I have a v old iphone).Since buying the Sonos Boost, all of my Sonos products have linked together and appeared in the Sonos app seemlessly so I mention this to anyone still struggling. The Boost sets up a separate wi-fi circuit for the exclusive use of Sonos stuff and it too works perfectly.Back to the Bass – this is one of the few Sonos products I’d describe as value for money as well as being of the same quality as everything else. You don’t buy Sonos for bargains, but it’s worth mentioning as this unit give the Play 1’s real body and is worth every penny.

No complaints. Works as intended. Easy set up.

This is a fantastic bit of kit

Adds base to music
Compact and gives base to make songs and music better.

Defective product
Was excited to take delivery of this product but was defective and would not connect at all. If you are familiar with Sonos system then you will know how much effort it takes to reset them if you change WiFi settings. In the case of this particular product it would not connect to the network at all. After speaking to Sonos customer support online and going through the troubleshooting steps the product was confirmed defective. Very disappointing as the Sonos system to connect is not user friendly. Think Assemble will not issue a replacement but a refund with shipping that I have to arrange. All in all a bad experience for a product that I was very excited about.