Watch the incoming signal
The Quality Control Amplifier watches how the incoming signal level changes over time and applies a corresponding gain change.
Now Accepting Beta Testers
Just listen
Test Velmer Guardian in real sessions and help refine the public release.
Apply to Beta
How It Works
How the Quality Control Amplifier works.
It responds continuously to the changing level of the signal you captured.
Respond continuously
When captured material falls to a lower level, the plugin can provide more gain. As the source becomes stronger, it controls the result without acting like a hard output ceiling. The process is continuous and automatic.
Work with what was captured
The Quality Control Amplifier does not recreate sound that was never captured. It works with the signal you give it. Good microphone choice, placement, gain staging, and headroom still matter.
Test it where the decisions happen.
Selected testers will use Guardian in real sessions and report what supports or interrupts their workflow.
Who should apply
Mix, mastering, post-production, broadcast, immersive, live-sound, and sound-design professionals who can test consistently.
What testers receive
Access to the beta build, testing guidance, and a direct channel for structured product feedback.
What participation requires
Real-session evaluation, clear environment details, and timely notes throughout the agreed testing window.
A recurring problem became a focused tool.
George Velmer created the Quality Control Amplifier to address a level-control problem that returned session after session.
“Levels should be a constant, not a recurring problem. Guardian is the plugin I wished existed every single session.”
Apply to the Velmer Guardian Beta
Tell us about your professional audio work and how you would evaluate Guardian. Required fields are marked with an asterisk.