Power amplifier electronic circuits-tube audio rf amplifiers Amplifiers are used to amplify a particular signal.Electronic amplifiers are of various types like power amplifier,audio amplifier,tube and stereo amplifier,sensor amplifiers,rf amplifiers,sound amplifiers,video amplifiers etc. Circuits and schematic designs of all major amplifiers are available in AmplifierLab.com Amplifierlab.com~Site InfoWhoisTrace RouteRBL Check