Both are oversampled and match their analog model curve behavior.Smooth Butterworth high- and low-pass filter with switchable characteristics (12 and 24dB per octave).Baxandall style shelving filter with pristine audio quality.Performance-critical parts are written in assembler.
It contains a complete gate/expander solution with a dedicated and comprehensive sidechain filtering path as well. It provides a clever tool-set to clean-up, fix and align audio tracks (typically taken from recordings) concerning overall frequency correction, phase alignment, spatial stereo field corrections and routing. PreFIX is a pre-mixing and audio alignment tool which typically takes place upfront the mixing process.