To guard against any conflict with trade mark owners Algorithmix did not assign any real labels to the PEQ types. Instead, rather neutral names related to their technical classification have been used. However, users are invited to discover sound nuances and share with Algorithmix associations with real products being modeled in the Classic PEQ Blue.
Every PEQ type has 10 bands with five freely assignable parametric filter types including bells, low-shelfs, high-shelfs, low-cuts, and high-cuts. To avoid bell filter asymmetry at high frequencies, typical for many digital equalizers, Classic PEQ Blue uses reference-quality upsampling technique, automatically switchable if the sampling frequency of the input signal is 44.1 or 48 kHz. By using proprietary filter algorithms very high dynamic range, as well as extremely low noise and distortion level has been achieved; impossible with any analog circuitry. The whole equalizer collection works with sample rates up to 384 kHz and therefore is perfectly suitable for DSD post-processing. Several instances can be simultaneously opened. Complete setups can be easily exchange between them. The true frequency response display is zoomable and in DirectX version the whole PlugIn can be enlarged to the full screen.