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 Sub Boost preset and without the plugin. Switch while it plays.

Controls

  • Source Frequency50 to 300 Hz — Upper edge of the detection band: the input is low-passed here (and high-passed at a quarter of it); set it just above the bass notes you want to track
  • Sub Level0 to 100% — Level of the generated sub
  • Sub Octave-1 Octave / -2 Octaves / Both — Generated octave: −1 octave, −2 octaves, or both blended
  • Original Mix0 to 100% — Level of the original signal
  • Output−12 to +12 dB — Final output level

Best uses

  • Add a sub octave that follows bass lines and kick pitch
  • Reinforce thin low end on small-speaker mixes
  • Deepen synth and DI bass with an octave-down layer
  • Cinematic rumble on hits and drones

Properties

Signal chain (per channel): Input → Band-Limit (HP at Source/4, 24 dB/oct LP at Source) → Zero-Crossing Tracker with Hysteresis → Flip-Flop Dividers (÷2, ÷4) × Band Envelope → 24 dB/oct Low-Pass → Sub Level + Original × Mix → Output Gain → Output. The sub follows the pitch of the played note and its level follows the bass band's dynamics; silence or no bass in the band produces no sub. 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

Kick Sub Boost · Bass Octave Down · DI Bass Fattener · Small Speaker Lift · Deep Synth Bass · Cinematic Rumble · Sub Only Layer

In the FX chains and Rack presets

808 Glue · Bass Enhancer · Beat Smasher · Kick Fertilizer · Low End Focus · Sub Harmonics · Wide Lift

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.