Denon Professional DN-280, Zone amplifier with microphone input, Class D 60W MONO amplifier, The compact format enables two amplifiers to be installed in one rack unit, Paging microphone input with gain control, Controls for tone and master volume, RCA inputs (L / R stereo inputs combined into MONO), 3.5 mm AUX input, 70V / 100 V / 4 Ohm Euroblock output, Frequency range 100 - 15,000 Hz, Dimensions (W x D x H): 200 x 273 x 43mm, Weight: 2.4 kg, Rack bracket included in delivery