Smart Bypass
Smart bypass allows you to compare the original signal to the processed signal with a level correction applied to it. This function is particularly useful when you are making final level adjustments to a recording, for example, during mastering.
Smart bypass compares the signal at the input of the Master Section to the signal at the output of the Master Section, and adjusts the level accordingly.
The main reason for smart bypass is that processing audio often changes the level or loudness of the signal. When comparing the processed signal with the original signal, your ears are sensitive to this loudness change. If you need to compare the sound of the effect independently from the loudness change, a level correction is required.