CDJ
Digital music players for DJs

A CDJ is a specialized digital music player for DJing. Originally designed to play music from compact discs, modern CDJs can typically play digital music files stored on USB flash drives or SD cards. In typical use, at least two CDJs are plugged into a DJ mixer. CDJs have jog wheels and pitch faders that allow manipulation of the digital music similar to a vinyl record on a DJ turntable. Many have additional features that are not present on turntables, such as looping or beat analysis. Additionally, some can function as DJ controllers to control the playback of digital files in DJ software such as VirtualDJ and Serato.
The public source identifies “CDJ” as digital music players for DJs. This brief keeps that definition visible, then builds a research path around Digital, music and players.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 14, 2026.
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This entry incorporates text from “CDJ” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.