The integrated circuit and configuration are uncommon. However, the sound quality is good. The circuit is from the 1983 Intersil Databook. The output transistors must be provided with heat sinks.
August 2017 - Heat sinks for use with Arcol / Aluminum resistors can be obtained from Mouser...
Can be used as a shield, this old American documentation circuit offers digitally selected...
This circuit charges a battery to power a flashlight at night. The circuit is from an English...