While perusing the Sonnox website i saw in intriguingly titled article — “Are your EQ Gain Knob and Channel Fader having an affair”?
It is always good to be reminded of the “good practice” of level matching your processors. The principal goal is to have the level of the output of a processor to be the same as the level of the input. If you bypass your processor volume shouldn’t change. If it does change you are lying to your ears.