The SC700CT A/V direct box from Switchcraft is ideal for connecting the outs of MP3 players, PCs, laptops, CD players, and other audio devices to audio mixers, microphone preamps, effects processors, house sound systems, and other gear with 3-pin XLR inputs. The SC700CT converts the outputs of high-impedance stereo or mono line level audio devices and musical instruments to low-impedance, balanced and isolated microphone level signals. All stereo ins on the SC700CT are summed to mono and out to one 3-pin XLR connector.