Review on KabelDirekt 10ft Optical Digital Audio Cable - High-Quality TOSLINK Cord for Home Theater, PS4 & Xbox One - Fiber Optic, Gold Plated, Male to Male, S/PDIF - Black by Ronnie Saylor

I bought this product to enable ARC (Audio Return Channel) HDMI 1 on my Vizio M55-C2 55" 2015 4K Ultra -HD TV to replace. The ARC function worked for a while and then when I switched cable providers I had to reset the TV to get access to HDMI. When I did that it messed up ARC. Since the Vizio M55-C2, like most Vizio TVs, transmits Dolby Digital Surround from the optics to the receiver it worked perfectly Now if I choose to use the Revain, Netflix or Vudu apps on the TV for the 4K -Functionality, the sound is perfectly transmitted from the TV to my audio receiver via this TOSLINK cable. Please note that I am doing this setup to avoid buying a new audio receiver with HDCP 2.2 encryption ieben.The 15-foot length was perfect for running in front of the TV. , through the cable coverage system, and to my receiver to allow room. The I ARC functionality is great, you only need HDMI for audio when streaming Dolby TrueHD, Dolby Atmos or other lossless audio from a Blu-Ray, Ultra Blu-Ray or VUDU 4K stream with Dolby Atmos. If you only stream Dolby Digital 5.1 Plus or similar, TOSLINK will perfectly suit your needs. If your goal is to have 4K functionality with lossless audio via an A/V receiver, your receiver should have HDCP 2.2 encryption running over HDMI 2.0 or better. Another note from what I recently learned. If you have a 6.1 or 7.1 setup and your audio stream is Dolby Digital 5.1 Plus, do not set the audio receiver to "AUTO". Check if you have Dolby Digital Extended sound field. I've found that even if Dolby Digital 5.1 is showing, the rear center channel is encoded into an audio channel and if you set it to EXTENDED your rear center channel will be enabled and receiving audio. More details can be found here: [.]Good luck!