Yes, this is what I meant.

I have calibrated my system to 75dB using the Denon test tones and my SPL meter. If I turn the volume control to 0dB, I easily hit average levels in excess of 105dB.

I'd like to hear more opinions on what the volume control calibrations mean. I'm starting to think that maybe it's referenced to the voltage across an 8Ohm load with a known frequency.

I am curious what SPL levels you are witnessing when you turn your volume control to 0dB.