Audio mixers; Sound mixers; DJ mixers for mixing sound and audio; DJ sound mixers; DJ audio mixers; Electronic hardware for controlling the playback, mixing, and manipulation of sound and music, namely, audio mixers, soundboards, audio amplifiers, audio preamplifiers, audio crossfaders for audio and sound mixers and DJ audio and sound mixers, audio faders for audio and sound mixers and DJ audio and sound mixers, audio equalizers, audio switches in the nature of electric switches, audio switch...