The CDi Series of Crown amplifiers are professional tools designed and built for installed sound applications. The series includes three models which are identical except for output power CDi 1000, CDi 2000 and CDi 4000. All are rugged and lightweight and offer unmatched value in their class. CDi-Series amplifiers feature an intuitive front-panel LCD screen to guide installers through their configurations. CDi amplifiers also offer onboard DSP for loudspeaker signal processing. Other features include a switch-mode universal power supply, useful function indicators, proportional-speed fan-assisted cooling, removable Phoenix-style inputs, barrier strip outputs for low-Z or 70V140V loads, short-circuit protection and more.