All Series 4 audio cables are meticulously assembled by hand in Orlando, Florida. Series 4 Bi-Wire Speaker cables begin with ultra-pure highly conductive oxygen-free copper (HC-OFC) developed specifically for audio applications. Six stranded bundles are constructed by twisting strands clockwise and then wrapping the bundles counterclockwise around one insulated large solid conductor canceling magnetic fields thus reducing distortion. Two 16AWG conductors are designed for connection to the high frequency loudspeaker driver terminals while two 14AWG conductors are designed for connection to the low frequency driver terminals. Tributaries Series 4 Star-Quad design results in a high performance speaker cable that looks as good as it sounds.