MC3 is a 3-IN-3-OUT (XLR*2 RCA*1) passive audio splitter / audio switch

2 stereo XLR + 1 stereeo RCA inputs and 2 stereo XLR + 1 stereo RCA outputs

Function 1: switch among sifferent sound sources or amplifiers and compare their sound performance

Function 2: convert signal from balanced XLR to unbalanced RCA or from RCA to XLR

Pure passive device without any impacts on sound quality. Mini size suits very well for desktop and home use. New, open box