Pyle PMXAKB1000 WIRELESS MUSIC STREAMING: This 1000 Watt Bluetooth Stereo Preamp Mixer Karaoke Amplifier by Pyle Pro is equipped w/ a built-in Bluetooth for wireless music streaming from kids devices like laptop iPhone, Android, Smartphone, iPad, Tablets, etc MULTIPLE CONNECTIVITY: The device is equipped w/ 2 1/4" microphone input, 2 switchable RCA A/V inputs for source player (DVD, CD, VCD, etc.), 3 RCA audio output (to recording device, amplifier, mixer) & 2 RCA video Input / Output (TV, monitor device) DIGITAL KEY CONTROLS: The Digital Key Controls enables you to lower or raise the key of the source music sound to fit the vocal range of the person to sing. you can also reset the key back to its original state ROTARY CONTROLS: This has front panel rotary adjustable control center that allows you to control the volume, balance, and range of your microphones & the echo and tone of your music. It also has an Audio Master Volume and Mic Master Volume Control RACK MOUNTABLE SYSTEM WITH REMOTE CONTROL: The product comes with Rack Mount Brackets for easy placement and a remote control with all the necessary buttons for easy operation. An RCA Audio Connection Cord and Power Cable is also Included WORRY-FREE SHOPPING: With the Pyle PMXAKB1000 we are confident of the quality of our product, therefore, we offer a 30 day money back guarantee no questions asked