Features: * This mixer is a multi-purpose 4-channel mixer with a sound card, which can meet the various needs of users such as home music production, webcast, and K song cover. * The mixer is equipped with, input gain and treble and bass adjustment, built-in 48V phantom power supply suitable for direct power supply of condenser microphones, high-definition headset output port, MP3 player, Bluetooth receiver, with a connection to PC sound card. * The mixer is small and light, and can be directly connected to the USB port of the PC for power supply. No additional power supply is required, and it can be operated by connecting the computer to the power supply through the USB, which saves the trouble of using an external adapter. Specification: Name: mixer Number of channels: 4 Auxiliary channel: AUX Power Consumption: 25W Size: 18*15cm Packing included: 1 * mixer 1 * USB charging cable Note: 1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.