Hello.
This is just an idea, the tone equalizer module, can use the same method to show and hide the sliders as the color equalizer did and thus achieve a simpler and more compact interface that can show the advanced controls at the time the user wants to be precise or be simple if the user wishes, where you can control the tones from the same curve. It would also maintain consistency with the color equalizer module. That would make the program modules use the same methodology of operation.