This circuit is from Motorola's Linear Interface ICs of 1993. The circuit can be powered by symmetrical 6 to 12 V voltages and for a stereo version, two channels must be built.
This circuit was found in the ON Semiconductor's Thyristor manual of the 1980s. The high quality...
Suggested by an Electronic Engineering, this circuit uses components of the time. Modern...
The transistor used in this circuit is uncommon today. AC124 or equivalent such as AC188K and...