The mixer is equipped with input gain and high bass adjustment, built-in 48V phantom power supply for condenser microphone direct power supply, high-definition headset output port, MP3 broadcast, device with a sound card can be directly connected to the PC. - AUX-bus main channel output, One AUX output and backtrack,2-band EQ for each input channel,Built-in professional reverb,2-bus electronic balanced display - XLR plug and phone type plug can be connected what you want to use microphone or instrument, can be operated using USB bus power or a mobile batterypower Bank - Stereo input jack used to connect line-level instruments such as electronic keyboards and audio equipment. Two types of jacks are available: phone type and RCA pin type