Here's a couple in one sense of this post:
New York Audio Labs
Scott Nixon. He had an aftermarket crossover for the B&W 800 speakers 30 years ago that had the industry buzzing. He also developed a line of digital audio processors called Anodyne, that fell prey to a trade mark infringement because of the name. He developed the very first Peachtree product (electronics). He had a line of products under his own name as well. Very elusive.
