This fuzz effect for guitars was found in an American 1980s documentation. The transistors may be the BC549 and should be battery powered for noise sensitivity. Diodes are commonly used.
When you speak into the microphone of this circuit, the sound produced in the speaker resembles a robot...
The MC33064 can also be used on this circuit of Motorola's 1993 Linear Interface ICs. The circuit...
This circuit was found in a 1976 technical publication. It is possible to obtain an 11 dB gain in...