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 Big Long Tail preset and without the plugin. Switch while it plays.

Controls

  • Amount0 to 100 — Reverb amount and room size together: 0 is dry, higher values raise the wet level (up to 45%) and lengthen the decay (comb feedback 0.70 to 0.88), while the dry signal dips to 75% at 100

Best uses

  • Quick sense of space on dry sources
  • Room ambience on drums
  • Sit vocals back in the mix
  • Larger, longer tails at high settings
  • Fast ambience sketches

Properties

Input → mono sum → Freeverb-style network per channel: four damped feedback combs (damping 0.35) → two allpass diffusers; right channel uses slightly longer delays for width → mixed with dry → Output. Delay lengths scale with sample rate; 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

Small Room Touch · Drum Room · Vocal Depth · Wide Space · Big Long Tail

Try it

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