Using transistors at the time, this circuit was found in a 1970s documentation. Transistors support modern equivalents for 2A currents at least in the case of the output transistors.
This circuit is from a Popular Electronics from April 1991. The magazine no longer exists, but the...
The circuit is from an 80's publication, but the components are current, only special type diodes...
The galena XTAL is replaced by a germanium diode in this Project. Diodes such as the 1N60 or 1N34...