I ran a test this weekend with the Digital Video Essentials disk and my system. According to the DVE docs the test tone should provide a SPL of 75 dB if the system is calibrated correctly.
With my 975 on max volume (0 dB) I read 71 dB at my listening position on the Radio Shack meter. My speakers have a senstivity of 87 dB. So it appears that with the volume knob at 0 dB, which is unity gain, then the levels for HDMI appear close-for my system. I'll grant that it would be nice to have a little more gain for those with inefficient speakers or larger listening areas.
Your 7075 amp has 28 dB gain, 1 dB less than "typical." Not a big deal, but as long as we're splitting hairs.
I did a survey a several calibration discs, and whereas most do hit 75 dB, for some reason the DVE DVD came out at 73 dB. So if we add 2 dB to your 71 dB readings, you'd really be getting 73 dB (from other sources).
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