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