Who are the most underground high-end companies


When I say underground I am talking about companies that fly below the radar. Not much talk about them on audio forums, little if no reviews, no formal advertising, rarely see their gear at shows.

taters

Roger High Fidelity made in USA. all internal component are heavily over-spec (from resistors, wires to transformers) ,comes with lifetime warranty!. Even let you tour their factory if you buy their top products.

too bad I don't have deep pockets, and I also don't agree to the use of global feedback in their amplifiers..

my 2 cents

philip

I've bought wonderful speakers HPS-938 from Hyperion Sound.  This company participated in one show, had no advertising at all and very small dealer base.  They are deep below the radar today, since they went bankrupt.  
Other somewhat obscure companies that make noteworthy products include:

Neat (speakers that are reasonably priced)
Gradient (speakers, like the "Revolution" that are very flexible in terms of room placement)
United Home Audio (refurbished and improved reel to reel tape machines)
Odyssey Audio (high value, reasonably priced electronics and speakers)