Sebna, good for you about the Job. I hope it gives you as much enjoyment and satisfaction as it does me!
The RCA inputs are located as follows: Both RCA inputs are directly beneath the speaker binding posts. If you are looking at the front faceplate of the Job, the left input is located all the way to the left edge of the amp, as I said, underneath the speaker binding posts. The right input (and speaker binding posts), are not on the edge but about 3-4 inches in FROM the right edge. The power cord goes in towards the right edge of the amp. Hope that helps.
My speakers in my room with this amp benefited from warmer cables. The Job doesn't have the negatives usually associated with SS amps (bright, edgy highs, so-so midrange), but in my system, every little bit helps.