My reading comprehension is fine, thanks. But I am beginning to question that of others.
AGAIN, my Denon 3808 was XT-equipped with the DYN EQ and DYN VOL upgrade purchased, so that alone doesn't explain the trim differences between my 3310 and a 3808. Both with 1.2 V pre-outs and an identical "adj gain-less" ext amplifier.
My though was perhaps the 3310 "just" having MultEq and/or the mic was accounting for the at LEAST 4db differences.