

Perfect for injecting movement, this side-chaining effect introduces dramatic color shifts to whatever you feed into it. Without requiring any special routing, draw from a collection of creative shapes to create anything from reverse swells and fast wobs to twisted dynamic manipulations.
- MINI-SLIDER
Controls the mix of the dry signal and the processed (wet) signal. The percentage indicated is the amount of the signal that is wet.
Range: 0 ~ 100%
PAGE ONE CONTROLS
- [PUMP] MODE
This drop-down menu determines how the pumping action is triggered.
- Auto: Pumping is automatically triggered.
- Trig: Pumping is triggered by the TRIGGER button on PAGE TWO. In this mode, the audio level and timbral effects start low and go high when TRIGGER is activated, making it useful for swelling and reverse-type effects.
- Trig Inv. Pumping is triggered by the TRIGGER button on PAGE TWO. In this mode, the audio level and timbral effects start high and go low when TRIGGER is activated, making it ideal for ducking or sidechaining-style effects. You can think of this mode like a manually triggered version of Auto.
NOTE: When Trig Inv. is selected for MODE and the TRIGGER button is not engaged, Pump-O-Matic also functions as an aggressive dynamics processor that can be used to fatten up sounds without adding pumping movement. The AMOUNT and COMPRESS knobs change the intensity of this effect.
- [PUMP] RATE
This drop-down menu controls the rate of pumping.
- [PUMP] SHAPE
This drop-down menu allows you to select from a library of pumping shapes.
| Ramp | ![]() |
Pump | ![]() |
Piston | ![]() |
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| Sizzle | ![]() |
Slosh | ![]() |
Pulsate | ![]() |
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| Upbeat | ![]() |
Kicker | ![]() |
Seething | ![]() |
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| Step Up | ![]() |
Off-Ramp | ![]() |
Bouncer | ![]() |
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| Snippy | ![]() |
Sharp | ![]() |
Swisher | ![]() |
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| Quick Dip | ![]() |
Wob Soft | ![]() |
Wob Sharp | ![]() |
| Tectonic | ![]() |
- [PUMP] AMOUNT
Controls the intensity and depth of the pumping effect. There are a lot of little sweet spots across the range of this knob. At the lower end, it adds subtle movement. Around noon is a great general-purpose amount of pumping. At 75%, the timbral effects become more intense. When AMOUNT is turned all the way up, the downbeat of the pumping shape drops to digital silence, making it useful to carve out space in a sound for drums to punch through.
Range: 0.00% ~ 100.00%
- COMPRESS
Controls the intensity of the compression—higher values introduce more aggressive timbral effects and make the pumping effect more dramatic.
Range: 0.00 ~ 100.00
PAGE TWO CONTROLS
- TRIGGER
When MODE is set to Trig or Trig Inv., activating this button will trigger the pumping effect.
- LOOP
Controls whether or not the pumping effect repeats. When LOOP is switched on, pumping repeats continually. When LOOP is switched off, the pumping behaves like a one-shot.
- SONG POS
Controls whether Pump-O-Matic is synced to host Song Position. When SONG POS is switched on, the pumping effect syncs to the Song Position of the host and does not reset based on note input. When SONG POS is switched off, Pump-O-Matic effectively functions in Legato Mode—the pumping effect resets when you play a note, but does not reset on consecutive notes played on top of a held note, until the held note is released and a new note is played.
- COLOR
This drop-down menu contains a variety of tonal profiles. These shape the overall character of the sound and change the timbre-shifting behavior of the pumping effect.
- OUTPUT
Adjusts the overall output.
Range: –inf dB ~ 9.54 dB
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