speaker cable series application 1) used in aucio & video series, worked as the connective cable in audio & video 2) they are of good electric capability. also, the efficiency either of high frequency or low frequency is good too. its attenuation is low while its prevention is high. feature 1) the products can be divided in three kinds: the colored audio & video cable, the perspective audio & video cable and the perspective gold and silver audio & vided cable. 2) the colored audio & video cable and the perspective audio & video cable can choose the multi-phase tag according to the request to sign the polarity. the polarity line should be blue or red.