Apparatus for recording, transmission or reproduction of sound or images; amplifiers, radio signal tuners, digital to analogue converters, digital media player devices for accessing and playing music over an IP network, digital media players, portable media players and accessories therefor, non-portable media players and accessories therefor, headphones, gramophone pickups, loudspeakers, hi-fidelity audio recording and reproducing equipment, namely, sound recording apparatus; record players, ...