B055 5-Channel Active Stereo Mixer Multi-Channel Mixer with Independent Volume Adjustment & USB 5V Power Output & Headphone Monitoring, US Plug Product presentation: 1. Mini Active Stereo Mixer is a 5-way active stereo mixer for extended control of tuning, mixing instruments, CD players, tape players, computers, mobile phones, tablets, etc. It is compact and thin desktop mini design, compact in size, compatible with any device 2. Power supply adopts USB 5V power supply suitable for outdoor mobile power supply 3. Independent Audio Control: With independent audio source channel volume control knob design, you can adjust the volume of each input separately, to adjust the listening experience after mixing, and control the volume of each input independently 4. Five-way stereo input mixed output level signal gain +20dB 5. Simple installation: Input and output plug and play easy installation, you can enjoy different audio experience, output with earphone monitoring interface Product Parameter: 1. Input channel: 5-way stereo input RCA interface 2. Output channel: 3.5mmRCA interface 3. Input impedance: 100K Ohm 4. Output gain: +20dB 5. Frequency response: 20Hz-20KHz 6. Signal to noise ratio: More than 107dB 7. Total Harmonic Distortion: Less than 0.08% 8. Intermodulation distortion: Less than 0.01% 9. Power supply: USB 5V 10. Net weight: 0.38kg 11. Gross weight after packing: 0.53kg 12. Product size: Length 130mm x width 77mm x height 38mm 13. Packing size: Length 200mm x width 185mm x height 55mm Kit list: 1. Mini Stereo Active 5-way Stereo Mixer x 1 2. USB power cord, length 120cm x 1 3. USB power adapter US standard x 1