Gain Reduction Calculator
Calculate gain reduction, visualize compressor transfer curves, and load famous producer presets.
About the Gain Reduction Calculator
The Gain Reduction Calculator is a free interactive tool for music producers who want accurate answers fast. Whether you're searching for gain reduction calculator online, compressor transfer curve visualizer, how to calculate gain reduction, this tool gives you real-time results without leaving your browser — and explains the reasoning behind every value so you know what to do with it.
Every tool on MusicProductionWiki is built around one principle: answer the question and explain the reasoning. The Gain Reduction Calculator not only calculates — it shows you why those values work, what changes when you adjust them, and what professional producers do differently across genres.
This tool is part of the Dynamics & Compression category. It's embedded directly inside the relevant entries in The Producer's Bible — MPW's comprehensive reference library — where it appears in context alongside the theory that explains why each setting works the way it does.
All tools on MusicProductionWiki are free, require no login, and work in any modern browser on desktop or mobile.
Frequently Asked Questions
What is gain reduction in compression?
Gain reduction is the amount of volume reduction applied by a compressor when a signal exceeds the threshold. It is measured in dB — 6 dB of gain reduction means the output is 6 dB quieter than it would be without the compressor.
How do I use a transfer curve to set my compressor?
A transfer curve shows input level on the X axis and output level on the Y axis. Below the threshold the line is 1:1. Above it, the slope flattens according to your ratio setting. Use the curve to see where the compressor starts working and how aggressively it responds.
What ratio should I use for drums?
For punchy drum bus compression, start with 4:1. For hard limiting snares, try 8:1–20:1. For gentle glue on a full mix, 2:1 with a slow attack preserves transients. Genre matters — trap uses fast attack and high ratios, while rock uses slower attacks to keep punch.
What is the difference between FET, VCA, Opto, and Vari-Mu compressors?
FET (e.g. 1176) is fast and aggressive, great for drums and rock vocals. VCA (e.g. SSL G-Comp) is punchy and transparent, ideal for bus compression. Opto (e.g. LA-2A) is smooth and musical, classic for vocals. Vari-Mu (e.g. Fairchild) is slow and warm, best for mastering glue.
How much gain reduction is too much?
More than 6 dB of gain reduction on a mix bus usually causes pumping and unnatural dynamics. On individual tracks, 3–6 dB is a good starting range. Heavy limiting for loudness can exceed 10 dB, but always check for artifacts.