Builders, I've listed some parts on eBay for a medium power amp with 4-400s or tubes with similar impedance characteristics. Parts are in good shape, except for the sockets, that will require some cleaning before use. Take a look at: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3062043283&category=1502&rd =1 Thanks! 73, Mark