TEA2025B 2.3 Watt Stereo Audio Amplifier

TDA7377 2 x 30Watt Audio Amplifier
Price: $2.50
Datasheet: 

The TEA2025B is a 2.3-Watt Stereo Power Amplifier in a DIP-16 package.

It can operate in a low-voltage environment of 3v to 15v.

See the Datasheet for more details.