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The S6CST is an S series solid body electric guitar introduced by Ibanez in 1999. It was made in Japan by FujiGen as part of the high end J Custom line. It is one of a small number of J Custom models that was available outside of Japan.

The S6CST was released in Japan as the S-PB1 and S-PB2; the only difference between these two models is the fret wire. When the decision was made to offer the guitar outside of Japan, it was given the S6CST moniker. It's unclear which frets the export models had.

The S6CST features a sapele body (listed by Ibanez as "sappeli mahogany") bolted to a maple Ultra neck with a 22-fret ebony fingerboard with mother of pearl dot position markers. Components include a double locking tremolo bridge with integrated L.R. Baggs piezo pickups (which allow an acoustic-like tone), DiMarzio pickups with a pair of humbuckers flanking a single-coil and Gotoh tuning machines.

The S6CST has dual output jacks. A small push-button controls these outputs. When this switch is in the up position the signal is split with the piezo going only to the upper jack and the magnetic pickup signal going only to the lower jack. When the push-button switch is down the upper jack is disabled and the lower jack provides signal from either the piezo or magnetic pickups based on the position of the 2-way mini toggle switch.

As wired from the factory there is no ability to mix the piezo and magnetic signals through a single jack. A popular aftermarket modification (known as the KJG mod) replaces the 2-way toggle with a 3-way on/on/on toggle which allows the player to send either the piezo, magnetic or both signals to a single jack.[1]

The RG6CST is a similar model with with an RG series body.

The S6CST was produced in limited numbers (perhaps as few as 24 units) and it was made only in 1999.


Specification for the S6CST/ S-PB1/ S-PB2
Model name: S6CST/ S-PB1/ S-PB2
Year(s) produced: 1999
Sold in: Worldwide
Made in: Japan
Finish(es): Natural (NT)
Body type:
Solid body
Body material:
Neck joint:
Double Lo Pro Edge tremolo w/ piezo
Hardware color:
Cosmo black
Neck type:
S J Custom Ultra
Neck material:
3-piece maple
Scale length:
648mm/ 25½"
Fingerboard material:
Fingerboard inlays:
Mother of pearl dot
S-PB1: 22 / jumbo (SBB216-195)
S-PB2: 22 / jumbo (SBB215-175)
Top-Lok III
Machine heads:
Gotoh SG38
Pickup configuration:
HSH w/ L.R. Baggs piezos
Bridge pickup:
DiMarzio Tone Zone (H)
Middle pickup:
DiMarzio Blue Velvet (S)
Neck pickup:
DiMarzio Air Norton (H)
Magnetic pickups: Volume / tone / 5-way selector
Piezo: Volume
Output Selection: Jack select push-button / 2-way mini-toggle mag/piezo selector
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  1. KJG piezo wiring mod diagram, Kevan J. Geier, archived January 2003