SoundLink Coax Cable

Description

The SoundLink Coax Cable transmits digital audio signals between a CD transport, digital turntable preamp, streaming device, or television and a DAC or AV receiver using the S/PDIF coaxial digital audio standard. Most digital coaxial cables on the market are repurposed video cables — 75-ohm coaxial designed for analogue composite video and adapted for digital audio use. The SoundLink Coax Cable is specified from the start for S/PDIF: 75-ohm impedance tolerance held to ±2 ohms along the full length, and terminated with properly impedance-matched RCA connectors.

Why Impedance Accuracy Matters in Digital Cables

Digital audio over coaxial S/PDIF operates at frequencies up to 6 MHz. At these frequencies, impedance discontinuities cause reflections in the cable that corrupt the digital signal — producing jitter, dropouts, or outright loss of lock on the receiving DAC. Most consumers never hear this because cheap cables work until they don’t:

– 75-ohm rated impedance held to ±2 ohms — eliminates reflections and ensures reliable DAC lock at all sample rates
– Oxygen-free copper centre conductor — silver-plated OFC option available for reference-grade applications
– Dual-layer shielding — foil plus braid, providing greater than 95% coverage against RF interference
– Gold-plated 75-ohm impedance-matched RCA connectors — not standard audio RCA plugs
– Rated to 192 kHz / 24-bit S/PDIF transmission — future-proof for high-resolution digital sources

Compatible Sources and Destinations

The SoundLink Coax Cable is the correct connection for any pair of devices with matching S/PDIF coaxial ports:

– CD and SACD transports to standalone DACs
– Digital outputs on phono preamps and streaming devices to DAC inputs
– Game consoles and televisions to AV receivers via digital coaxial output

Available in 0.75 m and 1.5 m. Backed by a two-year warranty.