Heavy-duty components, Gold-plated provide superior signal transfer and sound reproduction. High-Grade Oxygen-Free Copper (OFC) for effective EMI and RFI rejection and flexibility. Cotton Yarn Wrap to reduce noise, Durable, and flexible PVC outer sleeve. Inside aluminum foil shielding layer to reduce interference, for a better fidelity effect. Low-Loss 98.5% Copper Braided Spiral-Wound Shield provides maximum cancellation of hum and noise.