CSMA280 Mixer Amplifier + CSR-V Wall Volume Control

The JBL CSMA280 is a commercial mixer amplifier for restaurants, cafes, retail floors, and offices that need background music and paging from a single chassis just 1.7" tall. It puts out 2 x 80W and powers 4 Ohm or 8 Ohm speakers, or connects directly to 70V and 100V distributed speaker lines through its built-in Hi-Z transformer, so a ceiling speaker run covering a full dining room or sales floor wires straight to the amp with no separate transformer. Eight inputs handle a typical install: mic/line euroblock inputs with 27V phantom power for paging microphones, plus RCA inputs for a music player, streaming box, or TV. Independent bass and treble controls on each output let you tune two areas separately, and the illuminated volume knobs stay readable in a dim bar or back room.

Announcements are built in. Voice-activated ducking on channels 1 and 5 pulls the music down when someone talks, and priority muting silences the other inputs during a page, even waking the amp from sleep mode. Sleep mode powers the unit down after about 30 minutes without signal, and two aux outputs feed an additional amplifier when the system grows.

A white JBL CSR-V wall volume controller comes in the box at no extra cost. It plugs into one of the CSMA280's rear RJ45 ports over standard Cat 5 cable with runs up to 1,000 ft (305 m), and the white finish blends into light-colored walls, so staff can turn the music up or down from the floor instead of walking back to the equipment rack.