This circuit is a 1 watt mono amplifier using the TDA 7052 from Philips. It is designed
to be used as a building block in other projects where a battery powered audio
amplifier is required to drive a small speaker. It will operate best from 6 – 12 V DC and
requires no heatsink for normal use.

Circuit Description :
Components :
C1 : 2.2uF electrolytic capacitor
C2 : 100nF ceramic/mono
C3 : 100uF electrolytic
R1 : 1K ohm resistor
R2 : 10K ohm log potentiometer
Spindle for potentiometer
TDA7052 Integrated Circuit
8 pin IC socket
Kit 27 Printed Circuit Board
Source: http://www.alltronics.com