Evertone Expander v2 Upgrade from v1: Upward Expander Plugin by Evertone Project

The main change from v1 is a full refactor of the internal DSP, plus a switchable HiDEF precision mode. HiDEF ON enables X8 oversampling and more precise gain-curve calculation. HiDEF OFF gives behavior matching v1 with a lighter CPU load.

Oversampling is set to X4 or X8. X4 works in either HiDEF state, while X8 is only selectable when HiDEF is on. The developer states that oversampling reduces the digital-style grain that can appear when the expander is driven hard. The plugin reports a small latency figure to the DAW for phase-aligned processing. HiDEF can only be switched while playback is stopped.

The expander is built on the equation of motion F=ma, with the signal treated as mass. Four physics modes are available: Standard, F=ma Light, F=ma Medium and F=ma Heavy, each with a different acceleration character.

Core controls include Threshold, Ratio, Attack, Release, Hold, Knee and Range. The FORCE and DAMPING controls shape the physics computation. The developer recommends FORCE 1.00, DAMPING 1 and HOLD 0 for a purely physics-based response. AUTO functions analyze the source and propose starting parameter values.