One Slider

DRIVER

One-Knob Warm Tube Drive

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 Drum Bus Glue preset and without the plugin. Switch while it plays.

Controls

Amount0 to 100 — Drive and mix together: 0 is the untouched signal, higher values push the input up to 12x into an asymmetric tanh curve and crossfade toward the fully driven sound at 100, level-compensated throughout

Best uses

Warm up thin vocals
Glue on the drum bus
Tube-like weight on bass
Even-harmonic colour on synths
Push a mix bus into soft saturation

Properties

Input → drive (1–12x) with bias (0 to 0.25) → tanh curve (bias offset removed, even plus odd harmonics) → DC blocker → level compensation → dry/drive crossfade by Amount → Output. Zero latency, no oversampling; 0 is a clean pass-through.

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

Vocal Warmth · Mix Bus Glow · Drum Bus Glue · Bass Tube Weight · Hot Synth Drive

Try it

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