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 sum.mation by Greiner Engineering Tools is a Virtual Effect Audio Plugin and a Standalone Application for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, an RTAS Plugin, an AAX Plugin and a Standalone Application.
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Product sum.mation
Developer Greiner Engineering Tools
Price (MSRP)
Type / Tags Automated Analog SummingAnalog Mixing
Plug-in, App & Soundware Format(s)
This is a Hardware product
InterfacesUSB 1USB 2
I/OD-Sub InD-Sub Out
PowerPSU (Internal)
DriverNo Driver Required
Operating System Availability
Download Released
Downloads Released
  Download Released
System Requirements
Mac OS 10.4 and above


Analog summing with DAW-driven automation.

  • 16 channels with left-center-right assign.
  • Unique stereo bus design with low noise & distortion + high current output.
  • Passive summing node output for experimentation with different amps (Neve, API).
  • Cascade-able design.
  • Familiar stereo metering.
  • DAW-driven volume automation, powered by a plugin inside the DAW you already own and are already familiar with — no need to learn a new automation package or buy a new computer.
  • Balanced channel inputs & direct outputs for insertion into any existing console.
  • Super transparent, modern VCA design.
  • Infinitely expandable architecture.
  • Compatible with any hardware control surface that's compatible with your DAW.

{See video at top of page}

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