John's detailed rig in 2011:
BASSES
Music Man Bongo 6-string basses
(latest 6er with the five-string's neck on the six-string body)
AMPS
Demeter HBP-1 preamp,
Demeter VTHF-300M tube power amp,
Demeter VTDB-2B tube DI,
Demeter BSC-212 2x12/1x8 cabinet,
Mesa Boogie Dual Rectifier head and 4x10 cab (for dirty tones)
Radial JD7 Signal Distribution Amplifier,
Radial JDX reactor direct box/speaker simulator
EFFECTS
Fractal Audio Axe-Fx Ultra,
Demeter HXC-1HX compressor,
Little Labs IPB Jr. phase adjuster,
Moog Taurus 3 bass pedals,
Fractal Audio MFC-101 MIDI foot controller,
Ernie Ball volume pedal
STRINGS & ACCESSORIES
Ernie Ball strings (.032, .045, .064, .080, .100, .130)
Furman AR-1215 AC line-voltage regulator,
Shure UR40 wireless,
Whirlwind selector A/B box,
KORG DTR-2000 tuner,
Mogami cable,
Levy's leather straps,
Jim Dunlop straplocks