Schematic Reference

This amplifier circuit based on the ic, and the use here is that where ic STK4017 IC has output power of 6.5 watts with the impedance 8Ohm. Minimum required supply voltage and maximum 20Volt 35 Volt DC.

Component
R1 = 100K
R2 = 2K7
R3 = 27R
C1 = 22uF
C2 = 100uF
C3 = 100uF
C4 = 100uF
C5 = 100uF
C6 = 47uF
C7 = 330uF
C8 = 100uF
U1 = STK4017
Besides using STK4017 ic, ic and can use that I mentioned the following:
STK4019
STK4021
STK4023
STK4025

Chances are you'll want this amplifier portable. Batteries do the trick fine, but you won't get much power out of a couple of 1.5V cells. Unfortunately the size of a decent amount of battery power will mean that the overall size of this amp will be much bigger and for that there are more benefits to be had using a device like the TDA7052 or TDA2822 for stereo.

Quick ref data of TDA1015T Chip

•     Supply voltage range: 3,6 to 12 V
•     Peak output current: 1 A
•     Output power: 0,5 W
•     Voltage gain power amplifier: 29 dB
•     Voltage gain preamplifier: 23 dB
•     Total quiescent current: 22 mA
•     Operating ambient temperature range: -25 to +150 °C
•     Storage temperature range: -55 to + 150 °C