The purpose of the DataPort amplifier backup panel is to provide redundancy, emergency paging, and other functionality required for many life-safety and evacuation or mission-critical audio systems.<br><br>The DAB-801 extends the Q-Sys fault-tolerant backup capability to include any QSC DataPort power amplifier and I/O Frames populated with Q-Sys DataPort cards. The DAB-801 provides the ability to add true N+1 amplifier redundancy to any Q-Sys system, plus the ability to automatically switch amplifier input sources from a primary I/O Frame to a backup I/O frame.<br><br>A single DAB-801 supports four 2-channel primary amplifiers with one 2-channel backup amplifier or two 4-channel primary amplifiers with one 4-channel backup amplifier. Two DAB- 801s can be stacked to provide double the primary amplifier redundancy.