HD SOUND QUALITY PROFESSIONAL AUDIO PROCESSOR - Four-channel input Support cell phone, computer, various musical inst ents. EASY RECORDING OF PLAYING AND SINGING - Live streaming/recording via USB2.0 cableconnected to a computer cell phone for use. Easy access to studio recording effects . ACHIEVE EXCELLENT SAMPLING RATE - 24-bit/192kHz sampling rate, clear listening effect. Low noise microphone Pre-amplified to bring out a sense of three-dimensional parency. REAL-TIME SOUND MONITORING WITH HEADPHONES - Sound card with 6.5MM and 3.5MM monitor output, Connectorslndependent knob for easy control of headphone volume. CHANNEL SGAIN CONTROL - adjustment of each channel, easy to monitor the signal output status. Colour:Black Material:aluminium alloy Package Contents: 1 * Audio Interface Sound Card 1 * USB Cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.