Correlation Meter (giving you information about the the mono compatibility of a stereo and a Surround signal) you also can make easily Phase Check with this tool... Displaying in 1/3,1/6,1/12,1/24 Octave frequency displayinge and FFT (2048 Bands) Decay settings (Display speed) for the Spectrum in the Octave Mode, the FFT Mode and one for the, dBFS and RMS Peak Level Meter-Meters Big Window (to have a full screen of the spectrum)