auDYo engineering is a small audio software developer focused on VST3 and LV2 plugins inspired by vintage studio hardware. The company operates as a one-person studio with a stated preference for DRM-free, affordably priced tools, and its plugins are notable for offering native Linux support alongside Windows builds.

The product lineup centers on effects that emulate classic analog and early digital gear. Twin Pitch is a dual pitch shifter, delay, and harmonizer plugin that draws on the sound of early 1980s digital pitch processors, with two independent pitch-shifting modules aimed at detuning, doubling, and stereo-widening effects. LII Flanger is a modulation plugin modeled on a late-1970s bucket-brigade analog flanger, pairing the characteristic warm sweeps of that circuit style with modern stereo processing and tempo sync.

auDYo engineering has 1 product cataloged on Equipboard, including Harmonizer Plugins.