Tripods for microphones; Motion control booms for use with microphones; Wireless speaker microphones; Microphonic pick-ups; Hand microphones with directional characteristic; Electric leads for microphones; Apparatus for long-distance microphonic monitoring; Racks and mountings specifically adapted for use with audio, visual, computer and telecommunications equipment; Magnetic supports for acoustic apparatus; Loudspeaker stands (adapted for); Holders adapted for the display of audio cassettes