The plugin splits input sound into high and low frequency components using 3-rd order Butterworth filters. It can act like low-pass, high-pass, lows and highs amplitudes balancer. It can split the processing result separately into left and right output channels.

This is first- and higher-order low-pass and high-pass filter (including third-order butterworth) with capability of splitting signal into high-frequency and low-frequency components at stereo output. The components are phase synchronized, you can process them (e.g. with dynamics effects), then combine them back. When Factor = .618 it serves as third-order butterworth filter/splitter having 1 int the pass-band and 18dB/octave rolloff in the stop-band.

Sound artist (vocalist, guitarist etc.), master or engeneer while recorsing and processing music/sound at PC.