Boost: Ultra-Low Distortion Upward Limiter by UrsaDSP Free Download

Boost is designed to increase loudness without forcing the mix into heavy character. UrsaDSP says its Trajectory Technology keeps audio clean and distortion-free while the limiter works.

The Emphasis control enhances the psychoacoustic loudness of transients without raising the peak level. This lets you adjust perceived loudness and peak level separately, which is useful when a mix needs to feel louder without hitting a hard ceiling.

The Focus control moves smoothly between upward processing and brick-wall limiting, so you can shape how the limiter behaves across a range of material.

The clarity true-peak detector removes inter-sample overs, which can cause DAC distortion, compression artifacts and unexpected loudness restrictions on streaming platforms. According to the developer, this is done without changing the sound of the mix.

The mid-side mode allows stereo image manipulation, letting you treat the center and sides differently. The max gain control is intended to preserve reverb tails, and drive and emphasis modes add character when you want it.