Tech 21 SansAmp Paradriver D.I. 20th, Preamp, 20th Anniversary edition, Pedal version of the RPM, a multi-instrument preamp for acoustic instruments, Electric or bass guitar, double bass, mandolin or any other instrument equipped with a pickup system, Controls: Level, Treble, Mid, Bass, Drive, Blend & Mid Shift, Switches for: Phantom & Ground Connect XLR, +10db 1/4″ jack, -20db XLR, Rumble Filter & Air, Optional suitable power supply Art. #409939# (not included), One jack input, One jack output, One jack output (parallel), One XLR Output, Dimensions: 120 x 95 x 50 mm, Weight: 340 g