The X4 Nanobass is the most compact and portable combo amplifier ever designed by Phil Jones Bass. It's a highly efficient mini engineering marvel that redefines transportability and “Tone to Go”. It's a 35-watt amplifier with a 4" speaker and 3-band EQ that not only rocks with bass, it will also provide dazzling tone for other instruments including guitar, ukulele, violin and electronic drums. The practical and versatile design includes an auxiliary input compatible with iPads, iPods and drum machines, and is Blue Tooth equipped for music listening enjoyment and other applications. PJB’s proprietary NeoPower 4" speaker delivers full frequency range that achieves ultimate tonal clarity and transparency for instruments as well as high-fidelity sound to any source fed into the auxiliary and Bluetooth inputs. The X4 weighs just over 5 lb. and is small enough to fit in a backpack. As with all products in the PJB family, it is constructed from the highest quality materials and built to provide years of enjoyment and “Tone To Go” anywhere in the world with its built in worldwide AC voltage input.