2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. Yamaha's fame in the world of electric bass began with the BB Series. The BB614 is a 4-string fretless with a bolt-on neck, alder body, maple neck, rosewood fingerboard, Yamaha original vintage style bridge, Yamaha ceramic split coil, Yamaha soapbar single, master volume, active 3-band EQ, and pickup balancer.