PSP SpringBox: Spring Reverb Emulation Plugin by PSP Audioware

PSP SpringBox aims to reproduce the distinctive "boing" that spring tanks produce on transients, along with a resonating musical quality that stays consistent from session to session. The presence control lets you shape how prominent that resonant character sounds in the wet signal.

A selection of spring configurations, from two up to six springs in total, changes the density and texture of the reverb. Stereo spread and pan/balance settings let you place the reverb to suit different mix setups.

The plugin uses two channel settings, A and B, so you can compare or switch between sounds quickly. A range of presets provides starting points.

PSP SpringBox covers two broad roles. On guitar, it can serve as a straightforward spring reverb in the style of a dedicated amp or pedal. In a mix, the developer positions it as a creative send reverb, where the spring coloration can add movement and character to vocals, drums or synths.

Because the spring count, spread and balance are adjustable, the same plugin can handle both a subtle ambience and a more pronounced, boingy effect. Operation stays simple thanks to the A and B channel layout and the preset selection.