QSC and Crown don't have xlr inputs we have rca to xlr. The recommend amplifier would be crown xls-2500 or qsc GX7.
I'm not entirely sure that there is a professional Poweramp that has RCA inputs. You would probably need to purchase an RCA to TS adapter. What device are you coming out of that's going into the power amp?
Thanks! Your answer is awaiting moderation.