TDA7052 1-Watt Audio Amplifier

TDA7052 1-Watt Audio Amplifier
Price: $2.50
Datasheet: 

The TDA7052 is a 1-Watt Mono Power Amplifier in a DIP-8 package.

It can operate in a low-voltage environment of 3v to 18v.

See the Datasheet for more details.