Earphones; Headphones; Audio amplifiers; Battery power supply pack for mobile devices; Cases for mobile phones; Chargers for batteries; Computer software for operating ear phones and head phones; Cabinets for loudspeakers; Microphones; Audio electronic components and apparatus, namely, surround sound systems; Portable digital audio players; Electronic products for the manipulation of the frequency, time, and amplitude characteristics of audio signals, namely, audio processors; Mobile phones; ...