FA Series is designed for easy and flexible placement, to go where other amps cannot: Under conference tables, behind displays, inside kiosks anywhere high-quality reliable power is needed, but space is limited. The highly efficient Class D design is further enhanced by a Silent Active Cooling System; all are Energy Star™ compliant to assure low energy consumption when not in use. Th FA-250.4 is rack-mountable via the supplied rack kit and one or two FA-125s may be mount together with the optional rack kit. FA Series is that neat audio magic trick that gives your project the performance you need… without the bulk, heat and power-consumption you don’t.