"TDR Kotelnikov is a wideband dynamics processor
combining high fidelity dynamic range control with
deep musical flexibility. As a descendant of the
venerable TDR Feedback Compressor product family,
Kotelnikov has directly inherited several unique
features such as a proven control scheme, individual
release control for peak and RMS content, an
intuitive user interface, and powerful, state of the
art, high-precision algorithms."
The standard edition can be downloaded for free.