tech 21 sans amp bass driver di: pre amp, DI box, tube emulator...all in one box. this pedal really needs no introduction. i realized that i really didn't need this because my swr with a telefunken 12ax7 is no slouch in the tone department! it's in excellent shape and comes with the manual. the EBS black label multi comp is pretty much brand new. it comes in the box and with the manual.