Features: This audio mixer has 6 channels input and 1 channel output line. Excellent audio performance, with ultra low noise operational amplifier. Compact 6 channel mixer, with easy and quick operation,also guarantees the highest sound quality and signal fidelity at maximum volume. Connect the power adapter with the 5Vinterface.When thepower connector is connected to the power supply, your mixer will automatically switch on and the power indicator will come on.Unplug the mixer when you need to separate it from the power supply. Note: make sure the power plug is easily accessible when you put the mixer into operation. lf the mixer is installed in a-rack, it should be easily separated from the power supply by a plug or full pole power switch. OUTPUT jack(OUTPUT terminal)transmits MIX signal.It is a 6.3mm mono interface.Connect the signal source with line level on these 6.3mm mono jack(INPUT). If the sourcevolume is turned too high,the input of the corresponding channel may be distorted(4)MONO/STEREO switch keyMixerlevel indicator light.LEVEL adjustment knob is used to adjust the output volume ofeach channel signalOUTPUT adjustment knob is used to adjust the OUTPUT volume of OUTPUT jack signal Warning: High volume may damage hearing or damage your headphones.Before starting the mixer,setall volume knobs to zero(far left).for Always be careful to keep the volume appropriate. Specifications: Material:Metal Size:Approx.150x70mm/5.91x2.76in Channel: 6 channels Power:USB 5V 2A Package Includes: 1x Audio Mixer note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.