The Classic PEQ Blue from Algorithmix is a DirectX/VST plug-in featuring precise emulations of classic parametric equalizers. The complete collection of twelve EQs includes standard, vintage, modern and experimental models, structured as ten serial and two parallel equalizers.
Every EQ has ten-bands with five freely assignable parametric filter types including bell, low-shelf, high-shelf, low-cut and high-cut. To avoid bell filter asymmetry at high frequencies, reference-quality up-sampling techniques are employed, automatically switchable if the sampling frequency of the input signal is 44.1 or 48kHz. Also used are different kinds of shelving filters along with cut filters.
By using proprietary filter algorithms, the equalizers exhibit a huge dynamic range, as well as extremely low noise and distortion level. This results in unparalleled sound purity. The whole equalizer collection works with sample rates up to 384kHz, making it eminently suitable for DSD post-processing.