Haha. No, I have a tank made from plexiglass and old tubes with bits of brass and copper. AND I have a tweed tank that has a little battery powered Fender digital amp in it with a 2 x 5 speaker from a flat screen tv. But there are circuits (Cricket Tube is one...) that could do that although I doubt tubes would stand up to rough riding.Do you have a tube amp on your bike, crazy?
Carl.