Unity Gain
Definition
A state in which the output level of a device or processor equals its input level, neither amplifying nor attenuating the signal. A foundational reference point when setting up and calibrating a signal chain.
In Simple Terms
When something goes in at one volume and comes out at exactly the same volume, no louder, no quieter. It's the starting point for comparing whether a plugin is actually improving your sound or just making it louder.
In Practice
A compressor with no gain reduction engaged should output at unity gain so that bypassing it does not change the perceived level of the signal.
Sources & Verification
- Self, D.. Small Signal Audio Design (3rd ed.)Focal Press, 2020
- Huber, D. M. & Runstein, R. E.. Modern Recording Techniques (10th ed.)Routledge, 2023
Last verified: 2026-05-05