If your Monsoon system is anything like the the stock system found in 98-02 F-bodies (Z-28-SS-Trans Am-WS6) the amplifier is garbage too. Not only does the Monsoon head unit artificially boost frequencies, causing distortion, but the amplifier is way underrated and sounds like crap. What must be done in F-bodies, is to rewire everything with new wire. Buy yourself an affordable, used, scratch-free 4 channel amp off Ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WDVW
or
http://cgi.ebay.com/ws/eBayISAPI.dll...786645132&rd=1
and a decent amp wiring kit:
http://www.knukonceptz.com/productDe...rodID=KOL-AK44