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 Kick Ducks Bass preset and without the plugin. Switch while it plays.

Controls

  • Threshold−60 to 0 dB — Key level above which ducking starts.
  • Depth−40 to 0 dB — How far the track is turned down while ducked.
  • Attack0.1 to 50 ms — How fast the level drops once the key crosses Threshold.
  • Hold0 to 500 ms — How long the level stays down after the key falls below Threshold.
  • Release10 to 2000 ms — How fast the level recovers after Hold.
  • KeySidechain / Main Input — Key source: Sidechain (track channels 3/4) or the track's own Main Input.
  • Key High Pass0 to 500 Hz — High-passes the key so only its attack triggers ducking (0 = off).

Best uses

  • Kick ducking the bass for a clean low end
  • Music ducking under voice-over or podcast speech
  • Pumping pads and synths from a kick
  • Making room for a lead vocal

Properties

Key (sidechain channels 3/4 or main input) → optional high-pass → peak detector → threshold with hold → attack/release gain smoothing → stereo-linked gain on the main signal. Zero latency. In REAPER, send the key track to channels 3/4 of this track.

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

Kick Ducks Bass · Dance Pad Pump · Lead Vocal Space · Voice Over Duck · Podcast Music Bed · Kick Click Keyed

Try it

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