Radio and television receivers; amplifiers; sound recording and reproducing apparatus; record players; high fidelity apparatus, namely, amplifiers, headphones, and tape recorders; phonograph records; recorded tapes; telephone answering machines; loudspeakers; loudspeaker units; microphones; electric cables and wires; audio cable; electric wires; cutting heads in the nature of a mechanical transducer for the cutting of master records for the production of vinyl records; gramophone electromechanical pickups; step-up transformers; electromechanical heads for pick-ups for playing records; tone arms for record players; headshells for record players in the nature of a head piece attached to the end of a turntable's or record player's tonearm, which holds the cartridge; magnetic pick-ups for record players; headphones; and replacement parts and fittings for the aforesaid in the nature of record brushes, stylus brushes, levels, lead wires for installation of cartridges, record stabilizers, alignment tools for set-up up of cartridges, mechanical and electronic stylus pressure gauges, stroboscopes, slipmats for turntables and test records