Sound recording, transmission and reproduction apparatus; loudspeaker cabinets and component parts; loudspeakers and component parts; sound amplifiers [ and component parts; ] audio and sound amplifying receivers; headsets for mobile telephones and smartphones, for use with computers and touch pads, for MP3 players, for TV and Hi-fi equipment; wireless transmitters and receivers; high-fidelity audio apparatus, namely, speakers; holders adapted for loudspeakers; noise reduction apparatus in audio signal recording systems, namely, distribution apparatus in the nature of distribution transformers; portable apparatus for sound reproduction; remote control apparatus, namely, remote control for [ radios, television and ] stereo equipment