[ GLOSSARY DEFINITION ] Audio gain Amplification of an audio signal. Also known as: audio gain Full Definition & Technical Explanation gain — Amplification of an audio signal.This audio term is part of the CompareTech technical dictionary and helps you read specifications, comparisons, and benchmark data across its device database.See also: in-ear headset. Related Technical Terms headset Headphones with a microphone. Audio in-ear Earbuds that sit inside the ear canal. Audio ← All Glossary Terms How We Score → ← Previous Term Next Term →