The S-DJ60X active reference speakers are designed for great audio feedback while practicing DJing skills. The speakers feature excellent sound quality, improved bass response and reliability, three types of inputs, and built-in equalization, useful for DJs who want to achieve the highest accuracy in sound reproduction. Each speaker is sold separately. For maximum audio performance, increased bass output and reduced unwanted resonance, each speaker utilizes a highly rigid medium density fiberboard (MDF) for the construction of its enclosure and bass reflex ducts. Additionally, to optimize sound quality and increase reliability, Pioneer uses woofers made with aramid fiber cones and soft dome tweeters infused in magnetic fluid. The S-DJ50X model features three types of inputs (XLR, TRS and RCA) for connection to different devices such as DJ equipment, computers, and portable devices. For convenience and power conservation, the speakers also include an Auto Standby mode that automatically turns itself off when there is no input signal sensed after 25 minutes and powers back on when signal input is detected.