Sirji the impedence at which an amp works decides how much power it can output. A 200W amp at 4 ohm will probably be half that amount at 8 ohm. So if one amp is rated 200W at 8 ohm and another one at 4 ohm, the one rated at 8ohm is roughly twice as powerful as the other one.
Thats all I'm trying to say. The power rating of home stereo amps and car amps can't be directly compared unless you are comparing the 4 ohm rating of the home amp. |