yg331 Unveils Free & Powerful Compressor ‘Relief Compressor’

Independent developer yg331 has released Relief Compressor, a free dynamics processor available in VST3 and AU formats for both Windows and macOS. Built with double-precision 64-bit processing, it is designed as a reliable everyday tool for mixing and mastering, and early impressions suggest it offers far more than the average freeware compressor. Download Now At […]

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Independent developer yg331 has released Relief Compressor, a free dynamics processor available in VST3 and AU formats for both Windows and macOS. Built with double-precision 64-bit processing, it is designed as a reliable everyday tool for mixing and mastering, and early impressions suggest it offers far more than the average freeware compressor.

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At its heart, Relief Compressor gives producers the choice between five different detector modes: Peak, RMS, Linear, Logarithmic, and Hilbert-based. Each one reacts to audio in a unique way, making the plugin feel like several compressors rolled into one. The Logarithmic detector excels at catching peaks with surgical precision, while Linear mode feels more open and punchy, perfect for drums or energetic tracks. Adding to this flexibility is a fixed 0.5 ms lookahead powered by a Kaiser-Bessel FIR filter, ensuring clean transient control, plus a dedicated sidechain EQ section with two bands, shelves, and pass filters for shaping dynamics with greater focus.

The interface is stripped back and functional, leaning toward a scientific look rather than flashy graphics. But this utilitarian design is part of the charm. One user summed it up well: “This little comp is really good. All the detector options in one plugin is what was missing in the freeware world. Sidechain EQ is also a great addition.” Others described it simply as “excellent” and “really good,” praising how it brings advanced compression features into a free package.

Of course, not every experience has been perfect. Some Reaper users reported stability issues, with one saying the plugin would crash on startup, while another noted that sidechain routing caused immediate crashes in their DAW. Even with these setbacks, many were quick to highlight how close the plugin feels to “perfect on paper.” One user humorously requested separate Dry and Wet knobs instead of what they called “Teh Evil Mix Knob Ov Dooooooom.”

Despite these small hurdles, the overall community sentiment leans heavily positive. Many described the compressor as offering everything they look for in a free tool, with one particularly critical user admitting: “Usually I am very critical and picky, but got nothing to complain about this time.” Relief Compressor also signals the developer’s continued growth, following previous releases like JS Inflator and Sky Blue EQ4, which already earned attention in freeware circles.

Relief Compressor is available now as a completely free and open-source plugin. No registration or activation is needed, just download it directly from the developer’s GitHub and drop it into your plugin folder. It runs on Windows 10 or later and macOS 10.13 or newer, with support for both Intel and Apple Silicon processors.

With its wide range of detector modes, clean design, and thoughtful DSP, Relief Compressor stands out as a versatile and powerful tool that rivals commercial options. For anyone looking to expand their mixing arsenal at no cost, this is a release worth grabbing.

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