Pump Pro is Orra Audio's four-layer version of the free Pump drawing board. Each layer has its own curve, clock, and target. ALL runs them in series. SEQ plays one at a time, with a crossfade up to two seconds. Fourteen destinations cover resonant filters, volume, pan, and eight effects, from saturation and bitcrush through reverb and delay.
The licence is $19 intro and $29 list, direct from Orra Audio. The 14-day demo starts in the plugin with no key. Latency reported to the host is zero. macOS 10.13 or later (11 or later on Apple Silicon) gets VST3, AU, and AAX. Windows 10 or later gets VST3 and AAX.
Use free Orra Pump when one curve is enough. Use Kickstart 2 when the only target is volume. Use LFO Tool or ShaperBox 3 when you need a larger modulation desk. The longer breakdown is the Pump Pro first look.