For those of you that are having difficulty with the loudness difference when switching input sources, try adjusting the "VOLUME TRIM" of your receiver. How to do this is described on page 53 of the manual in "advanced operation" section.
Did you also know that you can set the cooling fan to come on only when the unit gets hot - AUTO setting, or to run all the time at various speeds depending on internal temperature by setting it to the CONT. setting??
This can be done in the ADVANCED SET UP MENU described on page 81 of the manual.
Who knew you could learn so much by reading the manual....?!?!??!!