Three-band, dual-lane bus compressor with guided GR Intelligence, an audio-clocked Auto GR servo, and per-band parallel mix. Free.
Cambridge Bus Compressor is a three-band, two-lane bus compressor. Left alone, it operates as a full-range single-band bus compressor — insert it, pull the threshold down a little, and it holds the mix together. Bring in up to two more bands, independently on each side, only when the source actually needs frequency-selective control.
GR Intelligence reads the compressor against a reference target zone for the selected source type — kick, snare, drum bus, bass, vocal, mix bus, master, or a custom target — giving you context for the amount of gain reduction you're seeing. Auto GR goes a step further: set a target and it finds the threshold for you, using the same audio-thread control logic whether the plugin window is open, closed, or the session is bouncing offline.
Switch to Left/Right or Mid/Side and each lane becomes a independent compression lane — its own bands, its own crossovers, its own settings — while Stereo Linked keeps one set of controls governing both channels. Each band also carries its own parallel mix, blending toward its own uncompressed signal independently of the plugin's overall wet/dry balance.
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Next bundle price review: 16 Sep 2026
Learn moreTwo ways to work — drive it like a classic compressor, or set a target and let the plugin find the threshold for you.
Drive it like a classic compressor.
Set a target and let it find the threshold.
Bring in up to two more bands, independently on each side, only when the source needs it.
A guided read-out, and a servo that finds the threshold for you when you want it to.
Independent processing lanes, not just a linked stereo pair.
No license, no activation, no trial limit.
Low and High bands are opt-in, independently on each side — Mid is always active. Disable a band and its frequency range is handed to its neighbouring active band instead of passing through untouched.
A read-out panel that tells you what the compressor is doing against a reference target zone for the source — kick, snare, drum bus, bass, vocal, mix bus, master, or a custom target.
Auto GR reverses the usual workflow: pick a gain-reduction target and the servo finds the threshold for you, on the audio thread — not the interface.
Stereo Linked runs one set of controls across both channels. Left/Right and Mid/Side provide two independent processing lanes, each with its own bands, crossovers and compression settings.
Every band carries its own 0–100% mix control, blending toward its own uncompressed signal — independent of the plugin's overall wet/dry balance.
High-pass the detector, switch to an external sidechain source, or change how the envelope is tracked — all in the detector path, without filtering the audio path itself.
An optional post-compression character stage with four modes, from clean to driven.
The complete plugin, free. No license file, no activation, no trial limit, no account, no internet check.
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