One Slider

RISER

One-Knob Build-Up

Download free Part of NULL JSFX 2.5: 113 plugins, free and open source (MIT). Easiest with NULL JSFX Hub.

Listen

The same music with the Build Start preset and without the plugin. Switch while it plays.

Controls

Intensity0 to 100% — Build-up amount: a resonant high-pass climbs from 20 Hz to 2.5 kHz, a rising noise band swells in, the image widens and a short wash blooms. Automate 0 → 100 into a drop; 0 leaves the signal untouched.

Best uses

EDM and pop build-ups before a drop
Transitions between song sections
Turning any loop into a riser
Tension under a vocal pickup

Properties

Input → resonant 12 dB/oct high-pass (exponential sweep) + band-passed noise tracking the filter → Mid/Side widening → cross-fed diffuse wash → Output. Every move is smoothed over 30 ms so automation never zips; zero latency.

Formats

JSFXJSFX for REAPER, with REAPER's own sliders
GFXJSFX GFX for REAPER, with its own interface
VST3VST3 for any DAW
CLAPCLAP for any DAW

Factory presets

Build Start · Build Middle · Tension Peak · Pre-Drop Max

In the FX chains and Rack presets

Build-Up

See every FX chain

Try it

Try it on orOS StudioAdd it to a track in your browser, with its own interface. Nothing to install.