Reference:
EST-PA4160B
D-Class power amplifier. 4 x 160 Watts. Front panel indicators include: Supply / Active / Fault, 100/50 Volts available through the terminal blocks on the rear. The output channels can be connected to 2 x 320 W by daisy-chaining 50 V (parallel input). It is combined with the EST-PSM48 (charger and reserve source).