- a device in the amplifier circuit of a radio or phonograph that increases the strength of a weak signal for detection and further amplification.
Origin of preamplifier
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- an electronic amplifier used to improve the signal-to-noise ratio of an electronic device. It boosts a low-level signal to an intermediate level before it is transmitted to the main amplifierSometimes shortened to: preamp
Word Origin and History for preamplifier
Online Etymology Dictionary, © 2010 Douglas Harper