Microphones; reflection filters; sound filters; surface acoustic wave filters; sound recording apparatus; amplifiers; audio amplifiers; sound recorders; sound mixers; sound amplifiers; sound mixing apparatus; sound transmitting apparatus; apparatus for amplifying sound; sound amplifying receivers; sound reproducing apparatus; apparatus for the reproduction of sound; electronic sound pickups; microphone mixers; microphone plugs; microphone stands; microphone cables; parts and fittings for all the aforesaid goods; all of the aforementioned for use in relation to recording studio and live performance products.