RMAF 2012

Danny Richie of GR Research, which supplies drive-units and other components to the DIY community, designed and assembled these panel loudspeakers using push-pull planar-magnetic drivers from BG Corporation. The loudspeaker, which hands over to a servo woofer at 200Hz, sounded open and detailed with all-battery-powered tube electronics from Dodd Audio. (There was also, on static display, a gorgeous one-off Dodd preamp using 6C33C tubes for voltage gain!)