The TELIKOU WS-200 : 2 CHANNEL DESKTOP SPEAKER STATION adopts double-core shielded audio cable, one core is used for transmitting audio signal, another core is used for transmitting DC power or control signal, and the shielded layer is used as common line for audio and power supply. To decrease resistance of common line and crosstalk interference, the cable with larger cross section area should be used. When it is used in fixed way, the cross section area of single line should be at least 0.5mm2, when it is used in mobile mode, the cross section area of single line should be at least 0.35mm2. When the cable is longer, the cross section area of cable should be larger. If the cable has more than 2 cores, it is recommended to use the additional core as common line.