RC-1324-VX

via this auction

"Turns Any Modern 13-pin Roland-Ready Guitar into a Roland G-303/G-808 Vintage Roland GR-300 Guitar Synthesizer Controller! Recreates all the Features of a Vintage Roland Guitar Synth Controller, with Internal Hex Fuzz Circuit, Dual 24-pin and 13-pin Outputs, Extended Length NEW Data-Grade 12’ Cable and MORE! Play a GR-300 and VG-99 at the same time! Plus More! Works with Roland-Ready Guitars, Basses, Fender, Godin, Brian Moore, Parker, GK Equipped with Roland GR-100, GR-300, GR-700, GM-70, Ibanez MC1, and Korg Z3"

"Features of the RC-1324-VX:

* G-202 Style Hex Fuzz Circuit
* Attached 24-pin cable with metal, latching-type C-24D cable end
* Use any Modern Roland-Ready, GK-2/GK-2A, GK-2B, GK-3, GK-3B or RMC equipped guitar to play any Vintage, 24-pin Roland Guitar Synthesizer
* Essential vintage 24-Pin Synth Controls recreated on the front panel
* Tested for use with the Roland GR-100, GR-300, GR-700, GM-70, Ibanez MC1 and the Korg Z3
* Roland EV-5 type LFO Foot Pedal input replaces awkward touch pads to engage LFO/Vibrato features
* Roland G-303/808 feature set: 3 control voltage sources with hex fuzz
* Dual 13-pin and 24-pin Outputs, play a 13-pin and 24-pin synth at the same time!
* Adapts standard 13-Pin Synth Volume Control for 24-Pin Synth Volume Control
* 6 Internal Precision Trimmers for 24-Pin String Output Levels
* Powered by 24-Pin Synthesizer so there is no need for External Power Supply
* Elegant Compact Foot Pedal Enclosure"

More details at the auction and joness.com.