Sony ULT Tower 5 review: an affordable bass-heavy beast

The Sony ULT Tower 5 is one of the stand-out audio products I’ve reviewed in 2026. In many ways, it defies belief. Despite being pretty small for a traditional party speaker, it produces almighty audio, with the sort of bass you’d expect from a model twice its size. And, what’s more, it’s pretty affordable.

Sony has made a bunch of changes to its new ULT range, and they appear to have paid off. Perhaps the highest-profile change is the shift towards newly developed rounded woofers, marking a departure from the almost rectangular X-Balanced woofer units seen on previous ULT models. The tech giant told me that this was in an effort to maximize deep bass — something that’s crucial for a party environment. And this, in my view, was a great choice.

As with all of the best Bluetooth speakers in this size-class, the ULT Tower 5 plates up incredibly powerful yet regimented low-end output. When tuning into Everytime by Jesse Maas, the house track’s pumping deep bass was replicated to an excellent standard — it was agile and rhythmic, while also remaining driven and meaty. And this never came at the expense of other sounds in the frequency range, with electronic elements and vocals in the mid-range given plenty of room to breathe, and higher-pitched drums cutting through with precision.

Here, I was using the ‘ULT 2’ EQ mode, which delivers a powerful yet rounded performance. With ULT 1 mode, deep bass is prioritized, and I found this to be ideal for outdoor environments. For instance, when I tuned into First Summer by H.K., I was mesmerized by the richness and rippling power of the low-end, which was undeterred by wind noise, cars driving past, and other ambient sounds. This mode will also work brilliantly for large open indoor spaces, but is ill-suited to the acoustics of smaller rooms. It’s worth flagging that the ULT Tower 5 has a maximum power output of 300W, so it can also get super loud, no matter where you are.