Other equipment

• A microphone, so that the DJ can introduce songs and speak to the audience over the sound system.
• Electronic effects units such as delay, reverb, octave, equalizer, chorus, etc.
• Multi-stylus head shells, which allow a DJ to play different grooves of the same record at the same time.
• Samplers, sequencers, electronic musical keyboards (synthesizers), or drum machines.
• PA system or sound reinforcement system (power amplifiers and speaker enclosures), typically including subwoofer cabinets for deep bass (or, if a DJ is broadcasting and/or recording a set, broadcasting equipment or recording gear)
• Monitor speakers, for listening to the "house mix" that is playing over the main speakers