A 30

TheRoland DDR-30"Alpha Drum" is a digitalPCMdrum module built byRoland, in early 1985.It was introduced during 1985 SummerNAMMindustry trade show in New Orleans. The Roland DDR-30 Digital Drum module is designed to pair with PD-10 and PD-20 pads to form the Alpha Drum System, or viaMIDIcontroller (e.g.Roland Pad 8).The DDR-30 and Alpha Drums was the first-generation of Roland electronic drum sets.