A Numark DM2002X Pro Master DJ mixer. This three channel mixer can have up to three input sound sources. The gain control knobs and equalization control knobs allow the volume and tone of each sound source to be adjusted. The vertical faders allow for further adjustment of the volume of each sound source. The horizontally-mounted crossfader enables the DJ to smoothly transition from a song on one sound source to a song from a different sound source.DJ Qbert in Rainbow Warehouse in Birmingham (Video with close-up photography at the DJ mixer, though without sound). From 1:36, heavy use of the crossfader can be seen.An iRig Mix DJ mixer
A DJ mixer is a type of audio mixing console used by disc jockeys (DJs) to control and manipulate multiple audio signals.[1] Some DJs use the mixer to make seamless transitions from one song to another when they are playing records at a dance club. Hip hop DJs and turntablists use the DJ mixer to play record players like a musical instrument and create new sounds. DJs in the disco, house music, electronic dance music and other dance-oriented genres use the mixer to make smooth transitions between different sound recordings as they are playing. The sources are typically record turntables, compact cassettes, CDJs, or DJ software on a laptop. DJ mixers allow the DJ to use headphones to preview the next song before playing it to the audience.[2] Most low- to mid-priced DJ mixers can only accommodate two turntables or CD players, but some mixers (such as the ones used in larger nightclubs) can accommodate up to six turntables or CD players. DJs and turntablists in hip hop music and nu metal use DJ mixers to create beats, loops and so-called scratchingsound effects.[3]