REQ: Tokyo Dawn Labs TDR Ultrasonic (MAC-ARM)

TDR Ultrasonic is a filter designed to control the accumulation of ultrasonic content in oversampled recording, processing, or playback chains. The idea is to prevent ultrasonics from running into nonlinear systems.
Examples of nonlinear systems are peak limiters, creative distortion devices, compressors, and other forms of modulation. Analog capture devices such as tape recorders and disc cutting systems also exhibit nonlinear behavior, as do all playback systems (albeit to a lesser degree).