Van Moose Audio
Sidechain Pump / Ducker

PUMP

v1.0.0-beta — beta · Standalone + AU · macOS Apple Silicon

PUMP
sidechain pump
Depth
0.60
Rate
1/4
Curve
0.40
Mix
1.00

A minor pad — steady vs ducked on the beat (no kick needed)

120BPM
Free download

Get PUMP.

Beta build. No payment, no account.

Binary upload pending — check back soon.

v1.0.0-beta — What's new ▾
  • The EDM "pump" — rhythmic volume ducking locked to the beat, no sidechain routing and no kick required
  • Asymmetric "ghost kick" envelope: instant duck to (1−Depth) on every division, then a Curve-shaped recovery back to unity — distinct from THROB’s symmetric sine tremolo
  • Tempo-synced (default ON) — the Rate knob picks a note division; host BPM (or web TAP) drives the rate. Sync OFF = free 0.25–8 Hz pump
  • Curve sweeps the recovery shape: sharp (snappy pop back) ↔ smooth (lazy rise)
  • Internal tempo-synced ducker — no external sidechain key input in v1 (that is the "no routing" point)
  • Same duck on both channels + Dry/wet Mix — bit-exact dry at Depth 0 or Mix 0

Requirements

  • macOS 13 Ventura or later
  • Apple Silicon (arm64) — Intel / Windows coming later
  • ✅ Standalone app (PUMP.app) — A minor chord test tone
  • ✅ AU (Audio Unit v3) — GarageBand, Logic Pro, REAPER, Ableton Live

Install

  • AU → ~/Applications (open PUMP.app once to register)

Gatekeeper

Not notarized yet. Run once:

xattr -dr com.apple.quarantine /Applications/PUMP.app
Windows version

At 100 votes we build VET for Windows — FL Studio, Ableton, Reaper.

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PUMP — Sidechain Pump / Ducker | Van Moose Audio