4 Channel Dj Mixer Sound Board With 16-Bit Dsp Effect, Usb Audio Mixer Effects, ?4 channel Karaoke DJ Mixer?4-channel Bluetooth mixer,built-in wireless Bluetooth, DSP reverberation effect, 3-band equalization adjustment, comes with USB interface, support U disk playback function. Reminder: This kind of mixer is a traditional analog product, so there is no need to talk about whether the system is suitable or not. We are eager to know what function the customer wants to use. Any operation error may cause the device to have no sound.Welcome to email us. ?Mic Line + Audio Mixer Jack Inputs? The Mixing Console is great for multiple devices connectivity.2 XLR And 1/4''?6.35mm) Audio Jacks As 1st/2nd Channel Mono Audio Input, For connecting different devices: Dynamic, condenser microphones, wireless microphone receivers, musical instruments etc.3/4/ Channel L/R 6.35mm and 1 pair L/R RCA stereo inputs to connect CD plays/keyboard/computer.6.35mm headphone jack, you can plug in headphones at any time to monitor the sound and volume. ?4 Channel DJ Mixer Jack Output?2 AUX stereo aux returns jack,1 pair L/R RCA output and 1 pair L/R 6.35mm Main output to connect Active Speakers/Power Amplifier/Active Sound System/Trolley Active Speaker.In addition,also,the main output jack has 6.35mm and XLR jacks, which can connect two sets of speakers for playback at the same time. ?USB music player Bluetooth Wireless Connection?The USB interface can be connected to your USB stick/fast memory/MP3 to play music. DJ mixer enable to wirelessly stream music from Pad, Phone,Tablets,Computer and more bluetooth device to mix music. It has built-in control like Play/Pause/switch songs and Modes.Bluetooth works within 1.5ft.Bluetooth and USB functions are only available as one of the two options and cannot be used simultaneously.(Bluetooth works within 1.5ft) ?48V Phantom Power?The sound mixer have 2 XLR inputs with phantom power.you can feel free to switch 48V phantom power and ultra-low noise distortion enables the audio mixer to be used with condenser microphone. ?Reverb and Delay Effect?Sound mixer has Built-In 16 kinds of DSP effects Hi-Res.easily adjust the high Mid and low frequencies of each channel with the onboard 3-band EQ and gain controls.You can even add delay or reverb effects in your mix.Easily adjust the Ultra-low noise, high headroom mixer with super easy functionality for professional vocal and instrumental sound. Suitable for computer music recording,live streaming,podcasting,small bands show,network anchoring, meetings,wedding etc. ?Package content? Audio Mixer*1+power supply*1+manual*1.If you encounter any problems before purchasing or during use, you can contact us at any time, and we will serve you.