RSPhaseShifter is a precise digital recreation of the Roger Schult/German Audio Lab's Phase Shifter 500 Series W2324 hardware. Unlike typical simulations, it replicates the original analog topology with high accuracy, delivering a premium phase-shifted version of mono or stereo signals. Designed for seamless integration, this plugin supports all major digital audio workstations and offers high-resolution processing for professional audio work.

Featuring double precision internal processing and optimized algorithms, RSPhaseShifter ensures exceptional audio fidelity across standard sample rates up to 384 kHz. Users can adjust resonant frequency, gain, and phase angle in real-time, with phase settings ranging from 15° to 360°. The plugin includes MIRROR and FLIP modes to quickly configure stereo channels, along with a delta mode that isolates processed audio, enhancing control over frequency-dependent stereo spread, especially useful in mid-side workflows.

The user interface draws inspiration from the original hardware module for a compact design that reduces visual fatigue during extended sessions. RSPhaseShifter is ideal for mixing scenarios where multiple sources compete for space, providing an intuitive, efficient solution for aligning mix elements and improving clarity. Compatibility with macOS and Windows, combined with support for AU, VST, and AAX formats, makes this plugin a reliable tool for a wide range of audio production environments.