The original Audiomaster products were introduced by W & N Electronics Ltd., in the mid to late 1950s. Aimed at the higher end of the new burgeoning high fidelity market, the W & N ‘520’ mono amplifier utilised EL34 power pentode valves, and ‘Partridge Transformers’ for a much superior performance. Several highly flexible (mono) control units, boasting superb build and sound were launched to match the ‘W & N Audiomaster 520’. The arrival of stereophonic sound in 1958, saw the launch of the ‘Brecon’ integrated stereo amplifier ( 8 + 8 watts, ECL82 output valves ) to be followed by the ‘Colwyn’ pre & power combination ( 15 + 15 watts, EL84 output valves ) and the ‘Conway’ top of the range stereo pre amplifier designed to run with 2x ‘520’ power amplifiers.