An amplifier is attached to the speakers to increase the power and volume of the sound waves. Depending on the size of the venues played, a strong amplifier is needed to produce professional-level sound. A DJ needs quality amplifiers that are also sturdy enough for travel.
Quality speakers are needed to produce a wide range of sound. A subwoofer for low frequency, woofers for low frequency and mid-range speakers. Once connected to the amplifier poor quality is magnified. Avoid speakers that produce distorted or fuzzy sound.
To spin records, a disc jockey must have a turntable to play traditional vinyl albums or a CD player with two decks. Either way, the DJ must be able to play one song seamlessly to the next. Choose a turntable that allows track tempo changes, so the beats per minute of one song fits the beats of the next.
A true DJ needs a quality pair of headphones. While one song is playing, a DJ uses the headset to listen to the cue track. A quality pair is able to block out outside noise. Headphones with a closed ear design works best. Also choose a pair that is easy to take on and off quickly but will not fall off the head while in use.
To interact with the crowd, a DJ needs a microphone. Some DJs use the mic to give shout outs and dedications, as well as to introduce a particular set of music. Any clear microphone will do; however, a hands-free mic is worth the investment.