Some design objectives for audio power amplifiers

The design of an audio power amplifier capable of high-quality performance must be based on design objectives and principles determined from consideration of the entire transmission system. This consideration yields the following amplifier design principles: 1) the open-loop frequency response should be 20-20 000 Hz, 2) the peak amplifier capability must be at least 17 dB above the desired average power level, 3) the open-loop transfer characteristic must contain no nonlinearity that would severely reduce the in remental gain.