Earthquake PHD Mono Block, Built in 1999 these specs are close, might be 100% accurate
1000 W x 1 into 4 ohms
1000 W x 1 into 2 ohms
500 W x 1 into 4 ohms
Built-in variable low pass-filter
All time low-pass operation
Two independent low level RCA inputs
180-degree variable phase shift
Heavy...