FilterCult is a powerful filter and sound coloration tool. This multidevice effect processor is composed of a set of modeled analog gears and digital devices arranged inside a rackmount cabinet and accessible through a simple and easy to use interface.

At its heart, FilterCult consists of an accurate simulation of a transistor-ladder analog filter, meticulously preserving its original circuit topology, behavior, and quirks. Moreover, the addition of circuit-bending modifications and the possibility to use supplementary nonlinear electronic components sensibly expand its sound-sculpting possibilities.Playing the leading role in FilterCult is the FLT-TL22 device, an accurate modeling simulation of a transistor ladder analog filter. In order to make this analog filtering unit well suited for a wide range of use cases, a meticulous model of the original circuit design and physical properties was created.

A series of experimental circuit bends and improvements have been added, including device-level feedback path (with the possibility to delay the feedback signal), extra prefilter and post-filter nonlinear components (using transistor-based or tube-based technologies), a pole selector (by connecting different nodes of the analog circuit to the main device output), a high-pass path, and much more.