The curve-family compressor — eight engineered curves, British Mode, the summing link, residual color generators, oversampled like the plugin — compiled to WebAssembly and processing the stem while you listen. Autogain matches loudness to bypass, so POWER is an honest A/B. INPUT is the compression control: it drives program into each curve's fixed threshold. Start at 6:1 like the manual says, then hit Nuke — or drop in your own vocal; it stays on your machine, nothing is uploaded.