For astoundingly great voicing in the studio, the highly resonant and full-sounding jumbo body of the Studio Bass delivers big acoustic depth and presence. This solid-top 4-string takes full advantage of Breedlove"s unique bass bracing, featuring the Breedlove Bridge Truss system, which relieves stress on the guitar"s top while providing additional sustain and balance. This highly resonant and full-sounding instrument sports an extra-deep jumbo body that sounds as great acoustically as it does plugged in. Speaking of plugged in, the onboard L.R. Baggs TCV preamp gives you extra volume control, a 3-band EQ, presence control (fader), phase inversion and an integrated tuner.