Eccomum SL-4 Compact Size 4-Channel Mixing Console Mixer 2-band EQ Convenient and Practical: The ultra thin chassis design and sealed rotating control device are dustproof and sturdy. Power Supply Methods: With the included USB power cord, you can connect the mixing console to power devices such as computers, mobile power sources, and plugs, with strong compatibility and simple pairing. 4 Channel Dj Mixer USB Bluetooth MP3 Computer Input 48V Phantom Power, Suitable for DJ Karaoke PC Guitar Technical Specs: Input Mixer Channels: 4-Ch. 4 Channel Audio Interface Sound Board Mixing Dj Console With USB Mixer +48V Phantom Power Bluetooth Studio Audio Mixer For Karaoke Studio Streaming Recording 【Microphone and Stereo Input】- For a reliable power source,the portable audio mixer USB has a +48V phantom power. The Pyle 4-Ch. Bluetooth Studio Mixer - DJ Controller Audio Mixing Console System - DJ & Studio Console Mixer System - Multi 4-Channel Audio Source Mixing - Built-in Bluetooth Wireless Receiver - FX (Analog Effects) & 16 Bit DSP processor - Direct-to-Computer Connect & Sound Record Ability - LCD Digital Display & Front Panel Control Center... 【Music Mixer Board】- The sound board mixer is equipped with a high-definition LCD digital large display, USB interface, 6.35mm jack (L/R) stereo input, 3.5mm AUX input, 6.35mm headphone output jack, 2 Mic/Line mono input, If Channel 1/Channel 2 Use 48v Condenser Microphone Need To Press +48v Button Phantom Power,used for microphones, musical instruments and other audio equipment, to meet the input of various equipment. Input Interface: This mixing console is equipped with gold plated XLR and balanced line input interfaces, with insertion points. Sound mixer board connects to USB, PC, and smartphone BT to record and mix, uses built-in controls to play/pause, skip tracks, and switch between modes, simple pairing, and provides up to 24-bit/48kHz USB & Type-C recording features. Provide comprehensive dynamic control, suitable for stage performances and studio level sound playback.