Ultra-compact 4 Channel Stereo Sound Low-noise Mixer For Recording Live Broadcasting, US Plug 1. Material: metal 2. Simple stereomono switching, the mixer audio is divided into two channels 3. The input and output must use the stereo version of the 14-inch TRS stereo audio cable - male connector (14-inch male to male stereo audio cable, TRS cable is Keypoint), and then press the switch key 4. Mono version - mixes 4 mono signal inputs to 1 mono signal output (14 inch TS male to male connectors for input and output connections), Note: TRSTS cable is not included In packaging 5. DC 5V power supply no longer limits application scenarios. Note: Please use a CE or UL certified external power supply and stay away from interference sources, otherwise it will cause noise and other undesirable interference to the product (including adapters) 6. Versatile and simple to control, the audio mixer collects sounds from multiple different sources (guitar, bass and keyboards) into one monitoring position for monitoring or routing 7. Each channel on the line mixer has an independent volume control, independent input plugs and volume controls for each channel, and a single output for the amplifier 8. It mixes multiple channels into a single track, perfect for your keyboard, small stage setup, drum kit, or submix 9. Low noise, mini mixer produces good sound quality at all output levels, ultra-low noise operability, provides excellent audio performance 10. Distortion-free, easy to set up, ideal for quickly mixing 4-wire level signals without complexity 11. Dimensions: 10.8x7.5x3.1cm 12. Weight: about 380 grams