Not sure if my earlier post made it or not... but just in case

my MX900 got a DB update from URC. It has the ability to toggle through the different settings:
1) dyn vol + dyn eq on
2) dyn vol on
3) dyn eq on
4) dyn vol and dyn eq off.

They called it "suurround <sic> parameters"

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Denon 4520, EPIC80/500/VP180 Speakers