The Roland SC7 GM Module is a sound module designed to provide General MIDI (GM) sound capabilities to a variety of electronic musical instruments. It was released in the late 1990s and has been used by many professional musicians, producers, and composers. The module is capable of producing 16-part multitimbral sound with 128 different voices. It also features a variety of effects, including reverb, chorus, and delay. Additionally, the module has a built-in sequencer and can be connected to a computer via MIDI. The SC7 GM Module is an ideal choice for those looking for a reliable and versatile sound module.