 Godin and a few other guitar manufacturers have offered guitar models with an integrated "RMC hexaphonic pickup and preamp system" that is compatible with Roland devices.The RMC system uses piezo-crystal pickups built into the saddles of the guitar bridge, which conduct the vibrations of the strings as a signal that can be converted into a (13-pin) hexaphonic synth signal.This setup can be found in the xtSA and the LGX models.