Of course, the UI could present a single, 20 fixed band equaliser, and then attempt to find a 10 band parametric setting that closely approximates what the user has set.

Or, a better option, but one that takes even more programming...

The UI could be re-vamped so that you picked one parametric band at a time and adjusted its settings, and those settings could be graphed. You could do away with the left/right display and (as you said) show only the mono display.

Here is a picture of the best parametric EQ I've ever used. It's part of Logic Audio.



Note that in this example, only the middle 3 bands are activated, bands 1 and 5 are unused.

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Tony Fabris