Here is my design for a small battery powered guitar amplifier that I named the “J-Box”. It features laser cut wood construction with laser engraved graphics. The amp utilizes a 3-1/2 inch speaker, 9 volt battery power, a jack for connecting an AC adapter, and Volume and Gain controls. This amp has a very smooth break-up as the gain and volume controls are increased. It also has a nice clean sound and works well with acoustic instruments that have a pizeo electric pickup and electronics.