Hi, Do I have to run setup on the receiver before I can listen to anything? I wanted to do a quick comparison between my existing setup and the 3803. I hooked up the 3803 to a cd player and then my front speakers and played a cd. There was no volume at all until the volume was at max and even then the level was faint. I thought maybe channel levels have to be set before you could listen to anything or I have a defective unit. Thanks!!