I just coded options 1 and 2 in my 21 G05 HiFi and do not hear any discernible difference using any of the inner EQ sliders. Only the outer two function and they match what Bass and Treble are set to.
As for the Sound Profiles I am pretty sure I hear nothing. I want to think I heard something different between Studio and Concert but I'm pretty sure it's wishful thinking. No noticeable changes when adjusting the Surround Intensity either.
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