Phil Jones’ briefcase was already an unconventional bass amp before: with its two 5″ speakers and a variety of powering options, it is already quite different to other amps on the market. You can run the Briefcase from 110/220V, from your car’s battery or a internal battery. The built-in battery gives you about an hour of playing time. To charge the battery, simply plug the Briefcase into an AC power supply.

Phil Jones’ newest version of the Briefcase goes one step further: it’s solar powered. It uses solar panels, instead of your electrical outlet, to charge the internal battery. Charge time is 10 hours of sunlight to get the battery ready for 1 hour of playing time. Of course, it still runs with 110V/220V, too.

The picture shows Phil Jones’ prototype, but he plans to built about 10 solar powered Briefcases to start: “There has to be at least 10 people in the world who want to be totally off the grid and play bass!”

The Briefcase is available at www.kontrabass-atelier.de