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
I guess as far as a retailer goes that Deja Vu operation is pretty unique. Not the typical audio boutique. The other company I have never heard of so to me that would be considered very underground. You gave very good answers.

Urban Audio (Berning designed tube amps)

Morrow cables

Decware (amps have the only lifetime warranty in the industry)

Backert Labs
Klyne Audio Arts
Clayton Audio
Galibier Design
CODA
Jade Audio
My Sonic Labs