The designer of high-fidelity amplifiers should not limit his attention to conventional performance characteristics such as frequency response and distortion; he must rather keep in mind the part the amplifier plays in the entire electroacoustical chain. The most important problems arising from this general point of view are: (1) actual required output power and dynamic range, (2) protection against overload, and (3) facilities to equalize the characteristics or inherent deficiencies of associated elements in the reproducing chain. The purpose of this paper (after a brief survey of conventional performance characteristics) is to discuss these general problems and to give a description of an amplifier for domestic use designed on the basis of the resulting conclusions.
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