ONRI Audio REISEI - Mastering Processor For macOS With Harmonic Tracking EQ, Dynamics, and Loudness Metering

// Originally on Production Expert 17 August 2026

ONRI Audio has released REISEI, a one-screen mastering processor that keeps spectrum analysis, EQ, dynamics, saturation, stereo imaging and limiting in a single view. It comes from a designer and mixing and mastering engineer based in Japan who built the plugin for his own sessions after concluding that the tool he wanted did not already exist. We have the details.

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