source : https://320volt.com/en/amplifier-2-1-with-tda7377-circuit/ other additional specification read the datasheet IC 7377.

here brief receipe :

Resistors

2.pcs 56K resistors (green, blue, orange)

1.pcs 100K resistance (coffee, black, yellow)

5.pcs 10K resistors (coffee, black, orange)

1.pcs 1K resistance (coffee, black, red)

4.pcs Resistors of 5.6K (green, blue, red)

Capacitors

3.pcs 1000uF to 16V and up

2.pcs 100uF to 16V and up

5.pcs 10uF to 16V and up

1.pcs 47uF to 16V and up

1.pcs 470uF to 16V and up

2.pcs 0.22uF (224) polyester capacitors

4.pcs 0.47uF (474) polyester

3.pcs 0.1uF (104) polyester capacitors

2.pcs 1uF to 16 volts and up

Others components

1.pcs 10K double potentiometer

1.pcs 10K potentiometer (single)

1.pcs 2.54mm 2-pin connector (optional)

3.pcs connectors type terminal block (Block) 2 pins

Heat sink 12 cm long x 5 cm high and 2 cm thick.

1.pcs diode bridge 4 amps forward (combo / large type)

3.5 mm jack audio Cable with 3.5 mm stereo plug on each end.

2.1 millimeter DC jack for connected with accu 12V

2.pcs bases for 8-pin DIP integrated circuit

1.pcs transformer 12V CT with minimum 5 Ampere.  (combo version with AC 220V power cord) 

It can also be connected into 12VDC 5A power supply Unit or a batterypack 12Volt.

order this pcb, add to chart or download n hacked it :-)