Unity by Chris Meyer | Feb 27, 2018 Share This Tweet Share Usually used in the phrase “unity gain” this mean a signal keeps the exact same level from input to output. Alternative Meanings: UnityAlso stated as "unity gain", this means a signal passing through will have the same level on output as it did on input. This is sometimes stated as a multiplication factor of 1.0 (as unity = 1).« Back to Glossary Index