This is the traditional audio preamp configuration with the National Semiconductor LM382. The circuit has good gain and can be used with magnetic pickups or from signals from an auxiliary input.
This circuit provides a power per channel between 6 and 10 W depending on the load. The circuit is from...
For an 8 ohm load, this Motorola circuit was found in a 1968 documentation. The transistors are of the time...
This circuit was obtained from a 1990 English magazine. The circuit can be assembled with MOSFETs of...