1. Mini Passive Stereo Mixer is a stereo four-way passive mixer, used for extended control tuning, music mixer, CD player, tape player, computer, mobile phone, tablet, etc. No battery or other power source is required. 2. Output: RCA jack for connecting mixer output or connecting other output devices. 3. IN 1-4: Control the signal level from inputs 1-4. 4. 4 sets of stereo RCA input, 1 set of stereo RCA output, 5. 4 independently adjustable 100K ohm potentiometers. 6. Input impedance: 10K ohm -47K ohm 7. Output impedance: 2.5K ohm-10K ohm 8. Gain: -12dB MAX
