Roland GR 13 to 24-pin converter for GR-300 GR-700 GR-100 GM-70 KORG Z3........

Hello
For sale "Homemade" convert box design for GR-300 and also works great with GR-700....
-13-PIN INPUT -24-PIN OUTPUT -1/4 JACK GUITAR OUTPUT -HEX FUZZ (mode 1/2/3 +parallel output) -13-PIN PARALLEL OUTPUT -VIB CONTROL (1/4 jack on/off)
WORKS GREAT!!!!!! you plug your GK-2 GK-2A OR GK-3..... And you can play Roland 24 pins synth!!!!!!!!!!!!!!!!!!!!!! (GR-300 GR-700 GR-100 GM-70 ....)
Thanks