The Roland G-77 is a bass guitar synthesizer. It is the bass equivalent of the G-707 guitar, also used by Prince and the Revolution. The G-77 is designed to be used in conjunction with the GR-77B synthesizer unit. Brownmark used the G-77/GR-77B system on the Parade tour. He eventually had the synth pickup mounted in an Alembic Spoiler so he didn't have to use the G-77 live.