I'm trying to find some info( schematic,etc.) on this amplifier. It is a tube chassis with no tube socket markings. Appears from my experience to be possibly either a juke box or electric piano/organ amp? Transformer #'s are: PT C80-14-0-8 , OT C80-30-1C (both have #549740 on them). 3 eight pin sockets and 2 twelve pin. This is an old chassis. Well any audio amp detectives out there? Thanks for looking.