passive stereo mixer is a stereo four-way passive mixer for extended control tuning, mixing instrument, CD player, tape player, computer, mobile phone, tablet and so on. No battery or other power source required. The device can also be used as 1 In 4 Out stereo distributor clockwise to adjust the volume.
IN 1-4: controls the signal level from input 1-4.
4 groups of stereo RCA input and 1 group of stereo RCA output,
OUTPUT: is used to connect RCA jack to mixer output or other output devices.
Four independently regulated 100K ohmic potentiometers.