The model QA-900 is custom-designed using a twisted pair, diameter round cable, Terminated with low noise, gold-plated twist-lock RCA connectors with gold-plated outer shield construction for maximum signal integrity. Uses two (2) Oxygen-Free, High Purity Copper (OFHC) conductors reinforced with an aluminium foil wrap. Recommended for all kinds of analogue connections: Phono stage, CD/DVD Players, FM Tuners, Stereo Amplification Systems.