Professional multi-channel audio and MIDI interface with redundant failover protection for live musicians. A unique audio-MIDI interface for live applications. The secret of PlayAUDIO1U's success lies in the integration of two computers that are directly connected to the interface, forming a reliable redundancy and failover system. If one computer fails, PlayAUDIO1U switches to the backup computer in seconds—so quickly that the audience won't even notice. Backing tracks continue to play in sync, and the MIDI equipment remains connected.