The Phil Jones X4 Nanobass is a ridiculously small Bluetooth amp that can handle bass, guitar, keys and audio

Phil Jones Bass NanoBass X4
(Image credit: Phil Jones Bass)

Phil Jones Bass (PJB) has debuted the X4 NanoBass – a 35-watt single channel digital amp with Bluetooth connectivity that is astonishingly tiny.

Despite the name, the amp can handle signals not just from bass, but also guitar, keys, violin and e-drums with a 1/4” jack, while there’s an 1/8” aux input and Bluetooth connection for backing tracks or music and a 1/8” headphone out.

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Matt Parker
Features Editor,

Matt is Features Editor for Before that he spent 10 years as a freelance music journalist, interviewing artists for the likes of Total Guitar, Guitarist, Guitar World, MusicRadar,, DJ Mag and Electronic Sound. In 2020, he launched, which aims to share the ideas that make creative lifestyles more sustainable. He plays guitar, but should not be allowed near your delay pedals.