What is the greatest feature of this product?

With this unit, highly individualistic DJ performances are possible using Serato DJ thanks to such features as performance pads at which the four functions provided by Serato DJ (available free of charge) can be assigned to allow tracks to be arranged through dynamic actions (tapping, tapping repeatedly, etc.), a large jog dial for scratching just as you please, and a 4-channel mixer for multi-track mixing using the four deck functions. In addition, the controls are arranged in an easy-to-use layout, many input/output terminals are provided, and aluminum is used for the top panel to achieve a classy design, making this unit suited for all types of situations (clubs, home parties, etc.) and DJ performance styles.