Hi guys, I'm just about to buy an X3600H, this is going to be my first ever AV receiver. I already have an Atmos setup using audio interfaces and active monitors, with direct channels decoded by MacOS. I can see that the x3600 has 12 analog audio inputs, out of which 10 says "assignable" on the back. Am I going to be able to connect my 7.1.4 setup's 12 analog line level signals to these 12 rca inputs, and let the AV forward these signals to the preouts or the amps, maybe after applying room calibration? Basically I will have two separate signal sources to my speakers, and I am trying to avoid using mixers, or line combiners.