Yeah spoiler, the Normal, Flat, Front EQ selections relate specifically to three different types of auto-EQ with mike. The remaining EQ selection however is "Manual" and you can use that to adjust the eight specific frequencies(the auto-EQ can vary the eight frequencies, within limits) shown manually(figures)by +/- 6dB. So, that's something that you might experiment with if you have a source of specific test frequencies and something near one or more of the set frequencies(especially the lowest ones)is out of line. You can of course turn any EQ on or off with just one click on the remote to compare the results.
