Panasonic discontinued the brand for most products in October 2010, but it was revived in 2015 with new high-end turntables. The brand is best known for the SL-1200 DJ turntable, an industry standard for decades.

Digital Designs, or DD Audio is an American manufacturer of high-end consumer audio products. They produce home and mobile audio products, serving the sound quality and sound pressure categories of the mobile audio market.

The Ground Zero brand, which is trademarked world-wide, is one of the world's most respected names in car hifi.

M-Audio (formerly Midiman) is a business unit of inMusic Brands that designs and markets audio and MIDI interfaces, keyboards and MIDI controllers, synthesizers, loudspeakers, studio monitors, digital DJ systems, microphones, and music software.