I just got a fisher 404 quad recever and cant find any on the net or ebay . i have seen two 504s and one 304(?) were they rare or just a fad?. all eight speaker outputs work i havent cheked any of the component inputs yet. every ting lights up all the indicaters wok it just needed 30+years of ciggarett somke cleaned off it. any info on this beast wold be very helpfull thankand TURN IT UP!!!!!!!!!