The PBS400 uses the latest in digital audio technology to provide great sound and years of trouble-free operation. No tapes to break, stretch, or drag. No tape heads to clean. No moving parts to maintain. Just reliable performance and premium sound. The PBS400 computer plays back a human voice with studio quality. Optionally, the system can play any kind of music: classical, jazz - even corporate theme songs!  The PBS400 is designed for easy installation and the simple layout of the control head makes operation a snap.  Just select the required languages, select the title of the message, and press play.  The PBS400 offers the flexibility to provide custom scripts for up to four languages. Heads Up can also provide professional language translation services as well as male/female recording talent for a small additional charge. Automatically trigger the PBS400 with discrete signals (e.g., the seatbelt light) or from an optional Heads Up Checklist system.  Change scripts without removing the unit from the aircraft – simply download a new passenger briefing message from a laptop computer in just minutes.