Leit Audio Phrotator: Free Broadband Phase Rotator Plugin

Free Phase Rotation Plugin for Mac, Windows & Linux

Leit Audio has released Phrotator, a free broadband phase rotator plugin for macOS, Windows and Linux. The tool continuously rotates the phase of an audio signal from 0 to 360 degrees across the entire frequency range. As a result, it offers far more flexibility than a simple polarity switch, which only provides 0 or 180 degrees.

Moreover, Phrotator uses FFT-based linear-phase processing and preserves magnitude across the spectrum. Therefore, you can adjust phase without changing the tonal balance or level of the signal. The internal DSP runs at 64-bit double precision, which should ensure clean results even on demanding material.

Typical Applications

Phrotator is aimed at fine-tuning phase relationships between signals. For instance, it can help align multiple microphones on the same source, such as a drum kit or a double-tracked guitar setup. In addition, it can match parallel processing chains to the dry signal, or simply serve as a creative tool for sound shaping.

Unlike EQ-based phase tricks, the plugin keeps the gain constant throughout. Furthermore, a latency-matched bypass allows clean A/B comparisons, which is useful when judging subtle phase adjustments.

Features

Continuous 0–360° phase rotation with 0.1° resolution
Broadband phase rotation across the full frequency range
Magnitude-transparent linear-phase processing
64-bit double-precision internal DSP
Mono and stereo operation
Latency-matched bypass for clean A/B comparison
~43 ms latency at 48 kHz
VST3 for macOS, Windows and Linux
Audio Unit for macOS
Native Apple Silicon and Intel support

Availability and Download

Phrotator is free to download and use. However, a free Leit Audio account is required. There is no trial period, subscription or in-plugin activation. The plugin ships as VST3 for macOS, Windows and Linux, and as Audio Unit for macOS.

Price
Free with free account sign-up