Feature: 1. BUILT IN POWER AMP: The mixer has a built in power amp, easily drive 6in, 8in, 10in passive speakers. Just one step to output the mixing sound to the passive speakers. There is no need to connect an additional amp, and the one step operation is very simple 2. WITH DUAL WIRELESS MICS: The mixer sound has a built in wireless receiver module and come with great sound quality handheld dynamic dual wireless microphones, with long transmission range(50m) in open space 3. CONNECT TV FOR KARAOKE: Connect this this powered mixer to your TV or to Plug and Play Karaoke, if your TV does not have an RCA interface, you need to purchase a digital to analog sound converter to connect to your TV, and set up to connect external speakers on the TV to output sound to the speakers 4. USB SOUND INTERFACE: The mixer sound USB interface can be use for USB stick to play music or recording sound output to the USB sstick. USB stick playback, Bluetooth playback and stereo channel input cannot be used at the same time, and can only be used by one of the three 5. WIRELESS CONNECTION: The mixer enable users to wirelessly stream music from pad, phone and computer to mix music. Has built in control like play, pause, or switch songs and modes 6. TYPE C SOUND INTERFACE: The sound mixer can be connected to your computer or mobile phone via a Type C USB cable for sound input and sound playback 7. MIC LINE AND STEREO LINE INPUTS: The mini mixing console is great for multiple devices connectivity. 2 XLR lines input plug to connect mics or guitar, unbalanced 1/4in plug interface input, and L/R RCA stereo plug interface input Specification: Item Type: Mixing Console Material: Metal, plastic Battery: 2 x AA batteries(not included) per microphone Microphone Input: Frequency Response: 10Hz to 200kHz Gain Range: +14dB to +60dB SNR: 120 DB EIN Stereo Channel: Frequency Response: 10Hz to 70kHz Gain Range: Line: 8 To +15 DB, Microphone: +13 to +60 DB SNR: Line: 90 DB, Microphone: 104 DB EIN Main Mix: +28 DBu balanced, +22 DBu unbalanced Main Output: +22 DBu unbalanced AUX Send: +22 DBu unbalanced EFF Send: +22 DBu unbalanced Tape Output: +15 DBu/150. Package List: 1 x Mixing Console 2 x Microphones 1 x Power Adapter 1 x USB Cable 1 x User Manual Note: Use flower line for computer connection and avoid using headphone with call function for earphone connection.