1 OCC Conductor ,which is superior to OFC conductor. 2 For professional A/V application LB-5108 : Audiophile OCC Speaker Cable LB-5109 : Audiophile OCC Speaker Cable AB-5408 : Audiophile OCC Audio Cable TB-5208 : Audiophile OCC Digital Coaxial Cable BB-5605 : Audiophile OCC Balanced Cable PB-5702 : Audiophile OCC Power Cord