This plugin emulates the classic 600 style Vari-Mu compressor and limiter, renowned for its smooth, musical compression characteristics. It features an input attenuation control that allows precise adjustment from -18 to +18dB, enabling users to drive the circuit and shape the amount of compression applied. The release section offers six selectable times, each with unique compression curves, including auto-release options that adapt to the input signal, providing dynamic response suited to a variety of audio sources.

The plugin simplifies threshold settings by utilizing two distinct controls: a DC threshold that functions similarly to a ratio control ranging from 2:1 to 10:1, and an AC threshold that acts like a conventional threshold with a 50dB range. This approach helps users achieve the desired compression effect without confusion. Additionally, it includes a wide output make-up gain range of -18 to +18dB, allowing seamless compensation of volume changes after compression.

Additional features enhance flexibility and creative control, such as a mix knob to blend compressed and dry signals for parallel compression, and a high-pass filter adjustable from 20 to 500Hz to prevent the compressor from reacting to low-frequency content. The plugin also supports external sidechain input for sidechain compression techniques, and a fixed attack time of 10ms ensures consistent transient response. The intuitive bypass button completes the user-friendly design, making this compressor a valuable tool for shaping dynamics with character and precision.