Feature: 1. 4‑channel mixer can meet users' home music production, webcasting, K song cover and other needs. 2. The mixer is compact and lightweight. Support USB connection, plug and play. 3. The mixer is equipped with input gain and treble and bass adjustment. 4. With multiple interfaces such as main output and auxiliary output, and with monitor output interface. 5. The built‑in 48V power supply is suitable for direct power supply of condenser microphones, high‑definition headset output port, MP3 player, Bluetooth receiver, and with PC sound card. Specification: Condition: 100% Brand New Item Type: Audio Mixer Material: ABS Power: 25W Interface: Conventional Interface Applicable Computer: Stage Equipment Frequency Response: 10 Hz to 200kKz Gain Range: +14dB To +60dB Signal to Noise Ratio: 120dB E.I.N Frequency Response: 10 Hz to 130kHz. Package List: 1 x Adapter1 x Charging Cable1 x Audio Mixer1 x Manual Note: When connecting with a computer, use a flower wire to connect, and avoid using a headset with a call function when connecting the headset.