Evidence Audio SI2SPO1 Siren II 1-foot Speaker Cable The next generation of speaker cables! IGL Copper conductors provide open and extended midrange and high frequencies without glare or etching Solid Core Conductors preserve clarity and focus, revealing harmonic detail and articulation Open-Core Design increases space between conductors to reduce magnetic interaction 21 awg Total Size: A bundle of six 20 awg conductors which avoid skin-effect anomalies yet large enough together to provide ample damping