Bring real output to a permanent system and keep it efficient. The C2800FDi runs a 2 x 1400 W Class-H output stage — efficiency that earns its rack space — with the C-Series install DSP: FIR filters, per-channel PEQ, output delay, and load-impedance monitoring. Direct-drive 70 V/100 V feeds distributed lines, and the protection suite and three-stage cooling hold it steady under sustained load. Auditoriums, large worship rooms, and multipurpose halls get power and precision from one 2 RU box.