Genuine Cayin dedicated HDMI I2S interconnect cable for high-end HIFI digital transport and DAC decoder connection. 45cm fixed short length, multi-shielded oxygen-free copper core, 24K gold-plated HDMI A-A plugs. Eliminates signal jitter and interference, delivers ultra-clean I2S digital audio signal for Cayin tube audio equipment. Not for regular video HDMI usage.