The 3000B is an advanced bass multi-effects processor complete with 45 built-in effects including 7 Bass Synthesizer modes such as Harmonic Synth (4-voice). There are separate effects modules for Comp, Dist/Amp, Wah, EQ, Synth, Effect, and Dly/Rev and it has many special effects designed to enhance a bass guitar performance. Defret makes a normal bass sound like a fretless bass. SLAP achieves slapping sound from 2-finger playing.