1SUPERIOR PERFORMANCE: Mini mixer produces the highest sound quality at all output levels, boasting ultra low noise operational for outsting sound performance Distortion free easy to set up 2EASY TO USE: No batteries or other power source required The stereo mini mixer can also be used as a 1 In 4 Out stereo splitter with clockwise volume adjustment 3APPLICABLE: Stereo four channel passive mixer for extended control of tuning, mixing instruments, CD players, tape decks, computers, mobile phones, tablets, etc 4INPUT OUTPUT: The 4 channel mixer's inputs outputs include four stereo RCA inputs one stereo RCA output OUTPUT indicates that it is used to connect the RCA jack to a mixer output or other output device; IN 14 indicates that it controls the signal level from inputs 1 5CONVENIENT TO USE: The modern design of the passive mixer looks great on any desktop, with large controls that are easy to use small enough to avoid tangles of wires, clothing etc