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
128x128ihcho
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.
Burson Audio of Australia. They started out building for themselves and friends and things took off.