up forsale is an old school soundstream reference 500 amp.this amp is in mint condition(8/10) and perform flawless..if you know bout these old school soundstream reference amp then you already know the deal...they're way under-rated and push more than whats on the specs...nothing but clean sound quality and the power to push just about anything(could be bridge down to 1/2 ohms)...asking $150.

http://www.soundstream.com/manuals/A...300_500amp.pdf