They are pretty simple little machines.
One pentode 6DQ6B two resistors and three capacitors. The American valve is in reality a tube in its homeland. It is wired to be self rectifying and also has a steel clip that locks onto the Bakelite base that has to be pressed in order to release the valve from the holder. There is a date code that looks like 1970 to me.
One pentode 6DQ6B two resistors and three capacitors. The American valve is in reality a tube in its homeland. It is wired to be self rectifying and also has a steel clip that locks onto the Bakelite base that has to be pressed in order to release the valve from the holder. There is a date code that looks like 1970 to me.







