This four-channel recording performance stage USB mini mixer with Bluetooth and sound card features:1. Bluetooth function: The mixer has a built-in Bluetooth module, which can be connected wirelessly with Bluetooth devices such as mobile phones and tablets. You can play music and wireless audio transmission through the Bluetooth function, which is convenient for background music playback and wireless audio input.2. Sound card function: The mixer has a built-in sound card, which can be connected to a computer or mobile phone through a USB interface to achieve high-quality audio recording and processing. You can use the mixer as an audio interface to achieve high-quality audio capture and processing.3. Four-channel recording: The mixer has four independent audio input channels, which can record multiple audio sources at the same time. Whether it is an instrument, microphone or other audio equipment, it can be recorded through the mixer to meet the needs of multi-track recording.4. Performance stage application: the mixer is suitable for performance stage, concert and other scenes. Through the audio adjustment and effect processing of the mixer, you can realize the mixing, equalization and special effect processing of different audio sources to create more excellent live sound effects.5. Small and Portable: The mixer adopts a small design, which is easy to carry and use. Whether recording at home, live at a performance event, or out on tour, this mixer can be easily carried and used to meet audio mixing and recording needs.The four-channel recording performance stage USB small mixer with bluetooth and sound card functions has bluetooth function to realize wireless audio transmission; it has sound card function and supports high-quality audio recording and processing; it has four independent audio input channels and can record multiple It is suitable for scenes such as performance stages and concerts; it is small and portable, easy to carry and use. The mixer is a full-featured and convenient and practical audio tool, suitable for musicians, performers, DJs and other individuals and groups who need to mix and record.