The RPG-122K is a complete package all-in-one 12” PA system. Everything you need in a pro PA system setup is included: You get two 12” pro audio speakers with 1000 watts of total power. The system includes a master active speaker that features the built in amplifier and a second passive 12” speaker that is powered from the master speaker/amp. Rounding off this system are speaker stands so you can mount the speakers, a microphone and all connection cables necessary, so that you can get your party started right out of the box. The RPG-122K is perfect for DJ applications, karaoke, and parties or for live music gigs. The RPG122K has a great Bluetooth integration, USB input, SD card input, and preset digital graphic equalizer effects, and a wireless remote control. The woofers have a 30oz. magnet and high power aluminum voice coils while the tweeters feature 25mm Piezo crystal compression horns for clear loud highs. The ABS plastic polymer cabinet is time aligned with the drivers so the system is optimized to deliver a massive amount of bass, clean mids, and clear highs. The main active unit features a Clip LED indicator to let you know when you are beginning to distort so you can keep control on the music. Separate Bass and Treble controls are also included so that you can custom tailor your sound stage. There is also a built in equalizer allowing you to adjust the sound to the style of music you are listening too. The built in USB input and SD input are great options for playing back any of your stored music on USB or SD cards. The Bluetooth integration features the latest in BT protocol from the world leader in Bluetooth technology; CSR. Bluetooth is a great feature for powered pro audio speakers because it allows you to easily and wireless stream your music from any Bluetooth enabled MP3 player or phone. Also included in the MP3 section of the unit is a built-in FM radio.