You searched for:
“electron tube amplifier”
electron tube amplifier, electron-tube amplifier (s) (noun); electron tube amplifiers, electron-tube amplifiers (pl)
A circuit which uses electron tubes to provide the additional power needed to increase a signal: "An electron-tube amplifier provides the required increase in signal strength."
This entry is located in the following units:
ampli-, ampl-
(page 1)
electro-, electr-, electri-
(page 53)