I can contribute one name: Richard Sequerra, co-designer of the Day-Sequerra tuner and many other audio products. For a number of years, Richard has owned his own company, Sequerra Audio Design, where he makes both commercial and professional products. In the early 1980's, I owned a pair of his Pyramid MET-7 speakers, which were (and are) a very fine small monitor. For more info about Sequerra's products, go to the following link:
http://www.sequerra.com/
http://www.sequerra.com/