American Pro vs1406 rcas all black

This is the first amp I've ever seen with 4 rca sockets and all 4 are black. No right or left,or front or rear. No labels around them. They all have black centers. Common sense says input rcas on left and output on the right.white rca on top and red on the bottom.I cannot find a user manual, or any other lit for that matter.Any guidance will be enormously appreciatedJohn Kevin Ashley

Is it a 1 channel, 2 channel or 4 channel amplifier?

Ty for your repliey. It is a 4 channel. I've learned how to bridge the four channels to two, and using rca pigtails I can convert the incoming signal into 4 rcas(2 white, and 2 red), and plug that into the amp and that worked.Just hate not having any schematics or diagrams. John Kevin Ashley