In this mode you can reduce level of output signal after all processing modules and make it equal to the input level.
This enables estimate all processing changes at equal loudness of input and output signals. You can compare A and B settings or compare source and processed signal.
Also in this panel shows the average values of Peak level and RMS values for input and output at the same time.
Apply part of preset
Option "Apply part" lets you assemble new preset from several others or apply the settings for processing modules from different presets.
[ More about Audio Mastering for iPad ]