Audio companies which started from DIY users?

I bet there would be many companies once started from DIY users and have grown into well known established companies. Any example you know of?
thx

ihcho05-07-2013 1:27pm

zd542 Details Discussions Posts This discussion Message User 5,339 posts 05-08-2013 at 11:49am Copy Comment URL Report Comment Edit Delete Apple.
nicklane1 Details Discussions Posts This discussion Message User 2 posts 05-08-2013 at 01:29am Copy Comment URL Report Comment Edit Delete VH Audio. Prob not that well known. But Chris used to publish recipes for DIY power cords and interconnects. Now he sells his own brand and other accessories.
nonoise Details Discussions Posts This discussion Message User 10,838 posts 05-08-2013 at 05:02pm Copy Comment URL Report Comment Edit Delete Burson Audio of Australia. They started out building for themselves and friends and things took off.
atmasphere Details Discussions Posts This discussion Message User 11,794 posts 05-08-2013 at 08:30pm Copy Comment URL Report Comment Edit Delete ARC started that way. So did we, back in the late 1970s.