Specification: Input Port: 1 x ARC IN Audio Output Port: 1 x optical, 1 x Coaxial, 1 x L/R, 1x 3.5mm Contents: S/PDIF: History Audio Return and Directional Audio/Video Cables Pre ARC (before HDMI 1.4, 2009 ) HDMI 1.4 with ARC (Audio Return Channel) Sonos Beam -… ARC, or Audio Return Channel, is an HDMI feature, built into many TVs, receivers, and sound bars. 4.

When using the ARC function, the volume needs to be adjusted by your audio device. If the ARC does not work, try unplugging the cable or change HDMI cable, wait a few minutes to reconnect, and plug the converter into a power source 5.

S/PDIF interconnects components in home theaters and other digital high-fidelity systems. S/PDIF (Sony/Philips Digital Interface) is a type of digital audio interconnect used in consumer audio equipment to output audio over reasonably short distances. In addition to boosting bandwidth for … Designed as an upgrade to Optical S/PDIF, HDMI ARC has a maximum audio bandwidth of 1Mbps (S/PDIF is limited to around 384Kbps).

The signal is transmitted over either a coaxial cable with RCA connectors or a fiber optic cable with TOSLINK connectors. C2G 29114 Velocity S/PDIF Digital Audio Coax Cable, Blue (3 Feet, 0.91 Meters) by C2G "Works as I hoped" - by Clinton in WA As such ARC will only pass lossy DD/DTS from internal sources and will only pass 2-channel PCM from external HDMI sources. One rather large caveat that is missing from the article is that ARC (at least as currently implemented by HDMI chipset vendors) is effectively just an internal S/PDIF connection. The move from S/PDIF to HDMI ARC failed in bringing even a small revolution, but the introduction of eARC in HDMI 2.1 may now actually allow a major revolution. It has the potential to simplify setup, but it comes at a potential cost.