a compacitor is something now dont ask again and go away
Ultrasonic Frequency
it keeps constant power to the amp.
Yes. That's exactly what a capacitordoes.
A capacitor is a passive 2 terminal electrical component used to store energy in an electric field.
Sure you can. But it would be much easier to purchase a compacitor which acts like a battery in that it stores power and uses that to power what is connected to it. This also saves the alternator