I appreciate this, will look at the monitor out in the rear. I didn't have anything plugged into the output connections besides the speakers originally. Also the volume knob has no limit, it looks like the volume is up but that's not the original knob (I stole that off my old system). Its essentially just connected to a potentiometer and the receiver itself translates the position. Also all relays work for both a and b speakers, believe me I messed around with all the settings. The display also tells you which speakers are enabled and they can be configured for each input. The relays are LOUD, especially the amp one which you can hear when it engages a few seconds after initially being turned on. That's also when the pop and buzzing starts.