The JBL Dual EON615 15" 2-Way Powered Speakers with dbx DriveRack 260 Control System & RTA-M Microphone is a B&H Kit that comes with everything you need for general sound reinforcement, and affords you with the ability to tune your system to the acoustic space. The kit comes with two JBL EON615 15" 2-Way Powered Speakers, a dbx DriveRack 260 Control System, and a dbx RTA-M measurement microphone.