The Type 1233-A Power Amplifier was designed for use with a low-level signal source to provide a moderate amount of power output within its frequency range. The circuit is arranged to provide maximum flexibility for general purpose application. For example, at one position of the output switch the Type 1233-A functions as a wide-range oscilloscope-deflection amplifier. A particular feature of the Type 1233-A is an aperiodic frequency range providing appreciable power output up to 1.5 Me.