Ok? What does that have to do with it? Many monobocks have two speaker inputs, my ed nine.1 even has two.and it is a MONO amp, not a 2 ch. i didnt catch what amp it is.
And you can run up to 3k off 1/0 with good charging system, not 1800once again...IIUC, 8ga is good up to ~288w
4ga = ~720w
0/1 = ~1800w
well let me step down while jesus here has his say.And you can run up to 3k off 1/0 with good charging system, not 1800