Steren Speaker Cable Canada – Excellent Performance and Sound Quality for Most Speaker and Audio Equipment Connections. Delivers amazing quality sound in long runs. 99.99% Pure Oxygen-Free Copper Conductors. Clear Flexible PVC Jacket in Black Plastic Spool. Steren Speaker wire is your choice for home theatre systems. Steren Speaker wires come in 12 gauge, 14 gauge, 16 gauge and 18 gauge speaker wire spools.