Oswaldsmillaudio, ever heard of it.

I've participated in the annual tube tasting weekends.  As Whart mentioned, definitely not mainstream, but lots and lots of fun.

Jonathan is a really good guy.

ebm- I'm transitioning. 

I heard their speakers at a show. While fairly pleasant, I didn't feel they were worth the high price.

He had (probably still does) an old stone building/"mill" in Pa. which is, I think, the work shop studio for some stuff, though I believe that the horn makers he uses are third party, probably some other stuff built to his spec and aesthetic. There used to be these get togethers of the lunatic fringe there, Jeffrey Jackson, to name an example, and a bunch of the other gurus of the primo vintage, where they’d spend the weekend cooking out, probably having some beers or whatever, and building circuits on tables with alligator clips to connect stuff to -- looked in some pics like they used old style breadboards, etc. I lived for a long time in NY, and when he opened in Dumbo- down under the manhattan brooklyn bridges-a formerly blighted area that now requires your banker’s letter of sufficiency of funds to look at an apartment--I called him. Nice cat- good aesthetic sense, I get where he is coming from--I use horns and SET and vinyl. Never did business with him, know at least one guy who has a full system from him. If you are in that league, make an appointment!
You should also check out the old video of Jeffrey’s collaboration with some dudes up in the Catskills- lumbersexual porn. These guys were planing tree trunks to build the horn mouths, winding their own coils, etc. I can try to find it for you if you can’t locate it. There’s also a JJ blog called Hi-FI Heroin if you are in to real vintage and retro-frankensteins. very cool stuff. These guys would plotz over an original, unmolested WE set up from before we were born.