adapter
 

if hooking up a amp to a home sterio would i be able to use a ac to dc power adapter 12 volt

For a car amp something similiar to this

http://www.fcsurplus.ca/shopping/shopexd.asp?id=138

Why not just buy an inexpensive home amp. There are lots on ebay. Old pioneers, etc.
something like this:

http://cgi.ebay.ca/Vintage-PIONEER-STEREO-AMPLIFIER-MODEL-SA-7500_W0QQitemZ9733340699QQcategoryZ67784QQrdZ1QQcm dZViewItem

I have one of those and it still works fine after 25 years.


or this
http://cgi.ebay.ca/KENWOOD-INTEGRATE-STEREO-AMPLIFIER-KA-57_W0QQitemZ9733394122QQcategoryZ67783QQrdZ1QQcmdZ ViewItem


In order to drive your car amp to any reasonable level you will need a very clean and heafty 120V to 12V converter. Good ones are not cheap.

this has only got 18amp capacity, hope you're not planning on running a huge amp to it...