WAmplifier
WAmplidyne
WAntenna amplifier
WAsymptotic gain model
WBode plot
WBuffer amplifier
WMultistage amplifier
WCharge amplifier
WCharge-transfer amplifier
WClass-T amplifier
WClass-D amplifier
WCoherer
WCrossover distortion
WCurrent differencing buffered amplifier
WCurrent differencing transconductance amplifier
WCurrent-feedback operational amplifier
WDifferential amplifier
WDistributed amplifier
WDynode
WError amplifier (electronics)
WGain–bandwidth product
WInstrumentation amplifier
WIntermediate-frequency amplifier
WLine driver
WLinear amplifier
WLock-in amplifier
WMagnetic amplifier
WMultistage amplifier
WNegative-feedback amplifier
WOperational amplifier
WOperational transconductance amplifier
WPreamplifier
WProgrammable-gain amplifier
WRF power amplifier
WTower Mounted Amplifier
WTransimpedance amplifier
WTrue RMS converter