M-S……………….. Switches the side-chain of the HF limiter to M-S mode (the actual audio-path is
not affected). This function can be used to ‘zoom in’ on high frequencies in the
centre of the stereo image. With this control in the M-S position, signals that are
either in the centre (mono) or 180 deg. out of phase have a 6 dB lower threshold
than signals that are panned extreme left or right. The M-S mode can reduce mistriggering
of the HF limiter.