This circuit is placed between the instrument pickup and the amplifier input. The same version can be found from other sources in this section. This is from an English magazine from the 80s.
This 1 A circuit was found in a Philips documentation from 1966. The transistor is of the time,...
The audio signal generated by the oscillator stage is amplified by an LM380 and reproduced with...
This circuit is from a 1965 General Electric hobby manual. The circuit can be assembled with...