RCA Audio Power Amplifiers (APA-550) by RCA Technical Writers - 1973: Basic Circuit Configurations - rating methods- stability requirements

Very Light Wear on this RCA Technical Publication from 1979. It is free of any writing, marks or stains
From Radio Amateur Magazine 11/1973:

A 20-page brochure that describes basic concepts and techniques employed in the design of transistor audio power amplifiers and 38 silicon power transistors specially selected for use as input, driver, output and overload-protection devices in such amplifiers are available from RCA Solid State Division,

RCA Publication No. APA-550, "Audio Power Amplifiers," describes significant design features, basic circuit configurations, rating methods and stability requirements for transistor audio power amplifiers. The classes of amplifier operation and selection of the optimum class for a given output-power level are discussed, power amplifier drive requirements are defined and the effects of operating conditions on circuit design are analyzed.