Amplifier with complementary transistors (CB7465E)

This stage of two complementary transistors was found in a 1977 Radio Handbook. Transistors admit current equivalents.

0 to 6.8 V x 5 mA Power Supply (CB13479E)
Two operational amplifiers are used in this source obtained in an American documentation...
Turntable Amplifier LM380 (CB14165E)
This circuit is suggested by the Linear Applications Handbook of National Semiconductor, being used...
2 transistor amplifier (CB8927E)
This simple circuit for headphones or small speakers was found in documentation from the 90s. The...