The SansAmp Programmable Bass Driver DI is a bass preamp controls presence, drive, bass, treble, blend, and level control. Three settings can be saved and accessed by the three footswitches. It is equipped with a 1/4 inch input, 1/4" output, and an XLR out. This unit provides an analog signal path and the manufacturer offers sample settings to emulate many well known bass amplifiers. See https://www.tech21nyc.com/products/sansamp-2/bassdriver-programmable/ for the owners manual.