TDR Kotelnikov

TDR Kotelnikov is a wideband dynamics processor plug-in for controlling the dynamic range of audio while aiming to preserve its tone, timbre, and punch. The Homebrew cask installs the standard TDR Kotelnikov package, not the separately described Gentleman’s Edition.

Notable characteristics include:

• Independent release controls for peak and RMS events, using a crest-factor-based control scheme.
• A flexible sidechain high-pass filter and stereo-linking options intended for stereo-bus processing.
• Delta preview for listening to the difference between the processed and original signals.
• Latency-compensated, click-free bypass and a resizable interface with 100%, 125%, and 150% settings.
• The official format listing includes VST2, VST3, AU, and AAX for 64-bit Mac systems.

Install it on macOS with brew install --cask tdr-kotelnikov. The cask installs the included macOS package; the product is a plug-in rather than a standalone audio application. After installation, use it from an audio host that supports a listed plug-in format. The official requirements specify Mac OS X 10.9 or later and OpenGL support. The separately named Gentleman’s Edition is described as adding features such as equal-loudness workflows and frequency-dependent ratio; those additions are not attributed to this cask’s standard package.

Sources: Official product page, Homebrew cask