Unified window design consolidates multiple edit and browser areas.A MIDI interface and keyboard (or suitable USB device).A PCI Express, ExpressCard/34, or FireWire based audio interface.2 to 4 Gigabyte (GB) of random-access memory (RAM) for large EXS instruments.A Macintosh PowerPC G5, or Intel Core Duo or Xeon processor.Low-latency multi-I/O audio hardware and MIDI interface recommended.Mac computer with a 1.25GHz or faster PowerPC G4 processor (PowerPC G5, Intel Core Duo, or Intel Xeon processor recommended).