Feature: 1. Multi Functionality: The mixer has the functions of input, high and low sound adjustment. The built in 48V phantom power supply is suitable for directly supplying power to the condenser microphone. HD headphone output port, MP3 player and sound card can be directly connected to the computer. 2. Multi Channel Mixer: The product has 4 XLR TRS combined mono microphones, line input jacks, 2 TRS and 2 RCA stereo input jacks. It also has 24 DSP multi function effect, which is suitable for daily use. It can be powered by computer, 5V power library, USB and DC adapter. 3. Strong Compatibility: This USB interface mixer is compatible with BT and can be easily paired with smart phones, tablets, laptops, and PCs. It can stream music from the music streaming platform directly and wirelessly from the device to the mixer. 4. Compact Design: It is compact in shape and light in weight, and can be perfectly installed on the top of the keyboard. The product buttons are easy to adjust and control the audio mix you want. 5. Wide Application: The mixer is suitable for recording and music production that needs to mix multiple channels. It is very suitable for drum, keyboard, small stage setting, etc. Specification: Item Type: Sound console Material: ABS metal Crosstalk: -80dB Signal to Noise Ratio: -82dBu Frequency Response:+0.5dB/2.0dB THD: 0.05%at+10dBu Weight: 1065.00g/37.56oz. Package List: 1 x Sound Console1 x Plug1 x USB Cable1 x Instruction