Active pickup, works with most guitar amps. It produces a sound similar to that of a bass drum when stepped on with foot and plugged into amp. It uses a standard guitar lead and has a standard 1/4" jack socket. It now has an active circuit allowing the user to play guitar and stomp box with a single amp. For the best possible sound, use through a bass amp, or an EQ with the treble turned all the way down. Dimensions: approx. 171mm (L) x 102 (W) x 52mm (H)