Service areas or zoning areas can be expanded by adding a PA2120. Lo-Z/Hi-Z switchable Class-D amplifier (Lo-Z: 120W x2 @4, 100W x2ch @3/8,?. Hi-Z: 120W x2ch or 200W x1ch, 70V/100V) equipped with 1 stereo/2 mono line inputs; can be combined with the MA2120 mixer amplifier.