Translating the company's famous onboard circuitry found in every one of their instruments into a compact effect that clocks in at under two pounds, the Sadowsky SBP-1 Bass Preamp/DI is a sleek three-knob solution for sculpting perfect tone. Volume and bass/treble EQ controls give you a range of options for adding heft and body to any bass without carving up the instrument to make room for onboard electronics, making this an especially attractive option for those with prized vintage basses they don't want to modify.