This power amplifier circuit was marketed in Japan in the 1960s. The transistors are made of germanium and the external power is supplied with a voltage of 12 V. The critical components are the transformers, in addition to the transistors.

This power amplifier circuit was marketed in Japan in the 1960s. The transistors are made of germanium and the external power is supplied with a voltage of 12 V. The critical components are the transformers, in addition to the transistors.