it helps to change tone,gain,bass n clarity of songs...
u can also connect ur cellphone and get output from speakers or headphones as u wish.. :)
Step 1: Components
1- LM 386 semiconductor (IC)
2- 100 micro Farad capacitor
3- 220 micro Farad capacitor ( acts as bass controll)
4- 10 ohm resistor
5- 5 kilo ohm variable resistor (acts as gain controll)
6- 100 ohm variable resistor
7- 0.01u capacitor
8- 0.047u capacitor
10- 9V Battery clip
11- 9V Battery
12- 3.5mm stereo jack male
13- 3.5mm stereo jack female
14- Breadboard (or you can use dotted board and solder)
Step 2: Circuit building
if u dont know about 3 pins of audio jack then search on google.....
(NOTE: U HAVEN'T CONNECT THE GROUND PIN (LONGEST PIN IN JACK) IN CIRCUIT.. )
Step 3: Testing & finishing
use screw driver to change resistances which changes tones & gain, volumes of ur song & makes it more coool.........!!!!!!!!!
post comments if u know smthing more about that which makes amplifier more cheap & more cool....!!