High efficiency class D power unit with four independent 500 W channels in one mainframe. It occupies 2 units high in 19" standard Rack cabinet. Four electronically balanced 0 dB inputs and two loudspeakers outputs for 100 V line. Signal inputs connection through removable strip. Protection against peaks, short-circuits, over-heating and over-loading. Front led indicators of power supply, signal, peak and protection. Cooling function by means of fan blowers. Power supply at 230 Vac. Frequency response 80 to 16,000 Hz, SNR > 80 dB and THD <0.5 %. Dimensions 484 x 88,8 x 445,5 mm. Weight of 8.03 kg. Maximum dissipation power 4 x 750 W @ 24 V DC. Finished in black.