There's a so-called "hi-fi" auction near Philadelphia and Wilmington, Delaware on April 1. I don't think they have a list of everything that will be for sale, but they have a video showing a sweep of all of the items. Is there anything quad? I can't tell.
FYI - I have nothing to do with this auction and I won't be there myself.
http://uniquesandantiques.com/140401/index.html
FYI - I have nothing to do with this auction and I won't be there myself.
http://uniquesandantiques.com/140401/index.html