I have an Alpine HU w/ tapedeck, stock amps and stock speakers, with a 6 disc Alpine changer in the trunk that came with the car when I bought it. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='

'> It hits about as hard as a 10- year-old car stereo.