Ample Sound - Ample Bass Jaco Fretless - ABJF III v3.5.0 WiN OSX | 2.03 Gb Ample Bass JF aim to bring the Fender Custom Shop Jaco Pastorius Relic Fretless Jazz Bass sound to your studio. Sustain, Palm Mute, Natural Harmonic, Hammer On & Pull Off, Legato Slide, Slide in & out, Slap, Pop,