ROland GKC-3 ROland GKC-3 Description: The GKC-3/5/10 are 13-pin cables for connecting GK-compatible guitar gear, including the VG-88 V-Guitar System and the GR-33 Guitar Synthesizer. These cables are available in lengths of 10 feet (GKC-3), 15 feet (GKC-5) and 30 feet (GKC-10). Use this cable to connect a Roland GK-series pickup to any Roland Guitar Synth, Roland V-Guitar System, or the new BOSS "GK Effect" pedals (WP-20G Wave Processor & OC-20G Poly Octave). 13-pin cable-10ft Get your Roland GKC-3 today