A proprietary knob that simultaneously adjusts the compression ratio and knee, ranging from transparent to aggressive.

The U17 is known for its unique hybrid circuit design that combines vintage and early solid-state technologies:

The is a high-end audio compressor plugin that emulates an extremely rare 1954 German analog hardware unit. It was developed by NEOLD and is distributed via Plugin Alliance . The "[WiN-OSX]" tag indicates it is a cross-platform release compatible with both Windows and macOS operating systems. Historical Background

Features heavy custom transformers (iron) throughout the signal path to provide a "thick" and "3D" analog sound. Key Plugin Features

A soft-clipping stage that precedes the compressor. Density controls the clipping intensity, while Emphasis targets specific frequency ranges for saturation.

A flexible internal or external sidechain with a tilt-style filter to focus compression on specific frequency energy.

Provides automated settings for Attack and Release times.

Uses ECC81 double triodes for both the audio amplifier and sidechain driver.