Pioneer's reputation as a source of reliable, high-quality audio equipment is one of the best in the industry and has been for many years. The two components in this DJ package, the CDJ100MK3 CD/MP3 Player and the DJM-800 Mixer, are prime examples of why they've maintained their status for such a long period of time. With the necessities professional DJs need at their fingertips and such forward thinking features as Auto Harmonic Tuning, an eject button guard, and an advanced Quick Return function, this studio or club worthy DJ equipment pack will not only make your mixes sound better, but make you a better DJ.