Feature: 1. STEREO MONO SWITCHING: The mixing sound is split into two channels. Input and output connections must use the stereo version male connector of for TRS stereo cable 1/4 inch (1/4 inch male to male stereo cable, for TRS cable is Keypoint), and then press the toggle key. The mono version mixes mono signal inputs into 1 mono output (1/4 inch TS male to male connectors for input and output connections). for TRS/TS cable is not included. 2. DC 5V POWER SUPPLY: Uses the latest DC 5V power mode for versatile applications. Please use an external power source with CE or UL certification, and stay away from interference sources, otherwise it will cause noise and other undesirable interference to the product. (including adapter) 3. VERSATILE AND SIMPLE CONTROLS: The mixer collects sounds from many different sources (guitars, basses, and keyboards) into monitoring positions for monitoring or routing. Each channel has a separate volume control, separate input plugs and volume controls, and single output from the amp. It mixes multiple channels into a single track and is suitable for keyboards, small stage setups, drum kits, or submixes. 4. LOW NOISE: The mixer produces the highest sound quality at all output levels, operates with ultra low noise, and delivers excellent performance. Without distortion and easy to set up, it's suitable for quickly mixing multi level signals, producing the highest signal quality and highest signal integrity, even at the highest levels. Ideal for multi keyboard devices and recording. 5. COMPACT AND STURDY: The stereo mixer has a heavy duty metal housing construction and knobs for firm adjustment. Its compact size fits on top of your keyboard for quick and easy adjustments to monitoring mixes. 6. 10 INPUT 1 OUTPUT: The 10 channel stereo mixer mixes high efficiency from dynamic microphones, electronic instruments, CDs, computers, speakers, and amplifier equipment into a single channel output. The stereo mixer can also be used as an expander when there are not enough channels. Specification: Item Type: Stereo Mixer Material: ABS+Stainless Steel Input: Type: 6.35 mm stereo interface Frequency Response: 20Hz-20kHz Impedance: 4.7kΩ Output: Type: 6.35 mm stereo interface Frequency Response: 20Hz-20kHz Maximum Output Level: +16dBu. Package List: 1 x Stereo Mixer 1 x Adapter 1 x Cord 1 x User Manual