The Marc 4 MIDI audio system provides four analogue inputs, four analogue outputs and two MIDI-I/Os with 16 input and output channels each. This compact PCI-card transforms a regular PC into the main unit of a professional home recording studio. With high-quality 24bit/96kHz converters and sound optimised circuit design it offers professional audio quality on an especially good price basis, forming the optimal solution to an affordable multi-channel recording system with extended MIDI-capabilities.