Radford Audio Ltd. was founded by Arthur Radford in the 1960's. In 1989 Arthur retired and Radford Audio was no more. He designed and produced fine HIFI amplifiers, as well as 'Transmission Line' speakers.

Arthur Radford was supported since 1965 (until 1972) by Dave Alner and Paul Hamblin (now 'Alner Hamblin Electronics') for building and testing the MA15/25, STA15/25 valve amplifiers, the SC22/P preamplifier, and also the FMT1, 2 and 3 FM tuners. They helped in the development of the STA100 valve amplifier, and also assisted Arthur Radford with development of the Beaumond, Tristar, Studio and Studio 360 transmission line loudspeakers. They was also instrumental in the design to production of the first Radford bipolar amplifier, the SCA30. Their work consisted of testing, quality assurance and preparation of operator instruction and service manuals.