A Au Audio specializes in providing quality products and equipment for hall sound, karaoke sound, conference sound, events... and always gives customers complete satisfaction best. With a team of enthusiastic staff at work, experienced in the field of solution consulting and providing audio and light equipment, A Au Audio will surely give the best advice on all types of products audio equipment that customers need. In particular, the B52 speaker line is a product of BDF, researched and developed by A Au audio companies. B52 is constructed of aluminum alloy, possessing excellent sound reproduction ability to bring an extremely realistic and vivid sound system.