Cabinets for loudspeakers; Loudspeakers; Microphones; Audio-receivers and video-receivers; Electric wires and cables; Transformers; Microphone stands; Electronic and optical communications instruments and components, namely, optical transceivers; Musical instrument digital interface controllers being audio interfaces; Equalisers being audio apparatus; Electric power distribution machines; Audio switching apparatus; Audio amplifiers; Guitar effects processors; Horns for loudspeakers