http://ampguts.realmofexcursion.com/PPI_5075DX/
Output Power at 12V:
2 x 50W + 2 x 75W @ 4 ohms (0.02% THD)
2 x 100W + 2 x 150W @ 2 ohms
1 x 200W + 1 x 300W @ 4 ohms bridged
Manufactured in 1990-1994
DX stands for Digitally Controlled Crossover.
The external RCM-1000 remote control is required to
program the crossover point and gain, which is connected
with an optical cable.