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Goodies · Free VST3 & AU plugin
PumpFlow
Duck anything in time with the kick, no routing needed
Put PumpFlow on a bassline, a pad or a whole bus and it pulls the volume down on every beat, the way a sidechained compressor would. Pick a curve, set how deep it goes, and drag the curve to fit your kick.
Features
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16 curves
Eight sidechain shapes from snappy to slow, two for sub bass, two that trim a kick’s tail, two that pull the sound back before the beat, and two rhythmic chops.
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Fits any kick
Drag the curve to make each duck shorter or longer, and nudge it in time with the arrows. Your sound and the kick are drawn behind the curve, so you can line them up by eye.
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Follows any rhythm
Sync locks to your tempo. MIDI restarts the curve on every note. Audio follows the hits in a sidechain input, for kick patterns that aren’t four to the floor.
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Ring mod
The kick’s own waveform ducks your sound too, one cycle at a time, starting a moment before each peak. Use it alone for a clean low end, or under a curve.
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Ducks with feel
Turn up Dynamics and softer kicks and notes duck less, so ghost notes stay light. MIDI goes by velocity, audio by how hard each kick hits.
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Picks out the kick
Send a whole drum loop to the sidechain and turn on Kick only, and its snare and hats stop restarting the curve. Sensitivity sets how quiet a hit can be and still count.
Demo
Specs
Controls
- Mix
- 0 to 100%
- Curves
- 16, in five groups
- Length
- 1/8, 1/4, 1/2 or a bar
- Trigger
- Sync, MIDI or Audio, looped or one shot
- Slope & Shift
- Drag the curve; nudge in 1/16 or 1/256 steps
- Band
- Duck only below a 20 Hz to 5.12 kHz crossover
- Ring mod
- On or off, starting 1 ms before each peak
- Dynamics
- 0 to 100%, by velocity or by hit
- Audio trigger
- Sensitivity 0 to 100%, and Kick only
System requirements
- Windows
- 10 or later
- macOS
- 10.15 or later, Apple silicon or Intel
- Host
- Any DAW that loads VST3 plugins, or AU on a Mac
- Format
- VST3, and Audio Unit on macOS
- Latency
- None; 5 ms with Audio or Ring mod, 20 ms with Kick only
Download & install
- Close your DAW if it’s running
- Unzip the download and open the Windows or macOS folder
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Copy
PumpFlow.vst3into your VST3 folder, and on a MacPumpFlow.componentinto your Components folder too (Logic Pro and GarageBand use it). Create a folder if it doesn’t exist: WindowsC:\Program Files\Common Files\VST3macOS/Library/Audio/Plug-Ins/VST3macOS AU/Library/Audio/Plug-Ins/Components - Open your DAW. PumpFlow appears after its plugin scan; rescan if it doesn’t. In FL Studio, open Options › Manage plugins and click Find installed plugins.
Tips and troubleshooting
- On a Mac, if you see a security warning, open System Settings › Privacy & Security and allow PumpFlow, then reopen your DAW.
- To duck from the kick itself, choose the Audio trigger and send the kick into PumpFlow’s sidechain input; how depends on your DAW. With no sidechain, the Audio trigger listens to the track PumpFlow is on. If the sidechain is a whole drum loop, turn on Kick only.
- Band ducks only the low end, so a pad or a full mix keeps its top while the bass makes room. The headphones button plays just the part being ducked.
- Ring mod needs a sidechain. Turn Mix down to hear it on its own, and turn on Band to carve only the low end.
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