The STAX DA-300 is a high powered Class A amplifier introduced in 1974. Its basic design concept is to realize the equation "Input=Output" in sound quality when the audio signal passes through the equipment. Advanced engineering and much effort in scrutinizing related parts succeeded in maintaining the total harmonic distortion less than 0.02% and in reproducing remarkably fidel and excellent sound. With its proven static and dynamic characteristics, the DA-300 is superbly compatible with such worl-renowned ludspeakers as JBL, Altec, AR, Tannoy, etc. as well as Stax electrostatic loudspeakers. All protective circuits, such as protecting the amplifier from excess voltage input, abnormal DC flow, or overheating, and protecting loudspeakers in case of the amplifier failure, are cleverly engineered into the system.
DA-300 Amplification that was only a dream until now. The world's finest power amplifier. Ask anyone who has heard it on the world's finest speakers. 150 watts RMS/ch pure class A power. Large, heavy, full features and protection circuits. $3,600.00 (... said the advert from 1976 ...)
Aparently the matching pre-amplifier shown was only a prototype.
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