House mark for a full line of electric sound or video equipment, namely, apparatus and instruments for recording, transmission, reception, processing, retrieval, reproduction and manipulation of audio and video signals; amplifiers; power amplifiers; keyboard amplifiers; converters, namely, electric signal converters; crossover networks for audio apparatus; graphic equalizers; microphones; microphone preamplifiers; electronic audio apparatus featuring sound effects; electric audio and video mixing consoles; master audio mixing console for use in an audio recording studio; electronic musical recording apparatus; sound adaptation apparatus for use with musical instruments; apparatus for recording sound on blank compact discs and audio tapes; compact discs featuring audio and video signals; blank data carriers for bearing sound; recording media, namely, blank optical or magnetic discs for audio or video signals; sound reinforcement and reproducing apparatus; Disc Jockey apparatus, namely, music and video mixing devices; apparatus for processing, recording and transmitting audio or video signals; control apparatus for audio and video signals; signal, sound, video and voice processors; headphones; mobile video or audio players; turntable pick-up cartridges used for tone arms, record players, namely, turntables, and audio speakers; headphone amplifiers and consoles; loudspeaker systems; studio audio monitors; video display screens; electronic components for electric guitars, namely, pick-ups; electrical and optical signal transmitting cable and connectors therefore; computer program in the nature of instructional manuals for music instruments; electronic publications, namely, training manuals and electronic magazines recorded on computer media and available on a global computer network featuring instructions and information on how to use computer software and electronic musical equipment; downloadable digital music sound recordings