amplifier Synonyms

reproducer inflator fm rf attenuator loupe magnifying glass recapping diode kilohertz booster speaking trumpet hearing aid speaker stethoscope transmitter tube radar IC amp AC ear trumpet picture tube cathode-ray tube CPU electromagnetism megahertz loudhailer PA system pentode public address system amplifying device transistor hearing aid processor mike mic CRT convertor capacitance capacitor oscillator bullhorn loudspeaker speaker system speaker unit electronic hearing aid repeater a computer descanter