passive sub amplifiers?

[theken]

im going to be doing in wall subwoofers and need amps/amp for 4 subs, do you know where you can get standalone amps for home audio that aren't receivers?

[Graham_A_M]

http://www.parts-express.com/wizards/searchResults.cfm?srchExt=CAT&srchCat=505&CFID=3017547&CFTOKEN=22566289
http://www.parts-express.com/wizards/searchResults.cfm?searchFilter=&srchExt=CAT&perPage=9&sortBy=1&layout=GRID&page=1&srchPrice=&srchCat=756&srchMfg=&srchPromo=
Check out all three pages for the listings.