DVDO AA2x20W-1 2x20W Class-D Audio Amplifier with Mic Mixer

This is the amplifier for a classroom, a meeting room, a bar or a signage rack where speech and program audio share one pair of speakers. Two analog inputs, a stereo RCA pair and a 3.5 mm jack, are joined by a microphone input with switchable 48 V phantom power and a mixer, so a wireless handheld or a condenser lectern mic sits over the playback source without a separate mixer in the rack.

Output mode is switchable: stereo at 2 x 20 W into 4 ohms as shipped, dual mono, or bridged at 1 x 40 W into 8 ohms. Bass, treble and volume are adjustable independently, a noise gate mutes the output when nothing is playing, and a loop output passes the signal on for daisy-chaining a second zone. Control is from the front panel, an IR remote or RS-232, and the Class D design runs cool enough to sit under a table, on a wall, in a ceiling or in a rack.