Here for sale 1990s Rockman Acoustic Guitar Pedal. It's in good working order. One of the battery covers is broken and holding well while taped. It powers from two 9v batteries and would work with an 18V PSU (not included). The Rockman Acoustic Guitar Pedal will give your electric guitar the resonant sound of an acoustic. It can also be used to enhance the sound of your acoustic/electric guitar. With the Acoustic Guitar Pedal, you can dial acoustic characteristics into your electric guitar. You can adjust the brightness to simulate the tonal qualities of guitar tops from spruce to mahogany and you can match the fullness of sound associated with acoustic body sizes ranging from 000 to jumbo. This revolutionary pedal can also be used with bass guitar, violin, banjo, mandolin or anything with a pick-up! Although the most common application for the Acoustic Guitar Pedal is with an electric guitar and a standard guitar amplifier, you can also use the Acoustic Guitar Pedal as a preamp for recording your guitar direct to tape. This works well with electric as well as acoustic/electric guitars.