Capitol Mastering Compressor

The Capitol Mastering Compressor is a meticulous emulation of the CM5511, the handbuilt tube mastering compressor used at Capitol Studios on countless hit records. Exclusively modeled by Universal Audio, it brings the same velvety dynamics and rich tube character to your stereo bus, drum bus, synths, and background vocals. Inspired by vintage Fairchild and Gates limiters, it delivers smooth, professional finishing touches previously reserved for Capitol’s mastering rooms. Plug-in-only controls let you tighten low end, add subtle saturation, and adjust stereo width, while comprehensive dBFS and LUFS metering and a sidechain filter make it a complete in-the-box mastering tool. It runs natively on Mac and PC with any audio interface—no UA hardware required. Ideal for hobby producers seeking album-quality polish in FL Studio, Ableton, or Logic.