3-Channel Mixer Front Stereo Amplifier High Mid Bass Adjuster, USB 5V Power Supply, US Plug Product presentation: 1. Sound adjustment: support highmediumbass EQ adjustment, highmediumbass can enhance +15dB and attenuation -15dB adjustment, support left and right channel balance adjustment, suitable for some need to adjust the tone of equipment, using compact and thin desktop mini design, compact size, compatible with any equipment 2. Three sets of stereo mixed input: 3.5mm+6.5mm+RCA 3. Provides three sets of stereo output simultaneously: RCA+RCA+3.5mm 4. Independent Toner Audio Control: With independent audio source channel highmiddlebass control attenuations -15dB and +15dB gain, the sound adjustment design allows you to adjust the audio independently to listen to the experience and control the output volume independently 5. Simple installation: input and output plug and play easy installation, you can enjoy different audio experience 6. USB 5V power supply, suitable for different applications Product Parameter: 1. Input channel: 3-way stereo input 3.5mm+6.5mm+RCA interface 2. Output channel: 3.5mmRCA interface 3. Input impedance: 100K Ohm 4. Output gain: High, medium and low -15dB and +15dB 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 130 mm X width 77 mm X height 38 mm 13. Packing size: Length 200mm X width 185mm X height 55mm Kit list: 1. Front Stereo Phoner HighMiddleBass Adjuster x 1 2. USB power cord, length 120CM x 1 3. USB power adapter US standard x 1