This 6-tube two-channel amplifier was found in an American documentation from 1947. The circuit is two-channel with a separation of bass and treble.
We find this circuit in an American publication of 1978. It is intended only for cars that have...
In fact, this dimmer can be used with currents up to 1.5 A according to the General Electric...
This 6-transistor transistor radio was manufactured in Japan in the 1960s. It is a portable...