It's very user-friendly, but I'm selling it because it doesn't have a voice changer. Brand: Duangu Number of Channels: 3 Connectivity: AUX, USB Output Connector Type: RCA Audio Input: XLR, RCA The Duangu 3-channel audio mixer has a compact design suitable for portability. Portability: ・Size: 18x12.5x4.5cm (palm-sized) ・Weight: Only 380g (lightweight design) ・Package Weight: 535g (including accessories) The description also clearly states "portable 3-channel sound controller," and it's designed for mobile use in DJ studios and live streaming. Despite its compact size, it has Bluetooth functionality, 48V phantom power, and a variety of input/output terminals, making it ideal for live streaming and recording work on the go. *Instruction manual is in English. It can be easily set up even without the instruction manual. You can connect smartphones and iPads by purchasing a dedicated adapter. Set to LOOP Back BGM.