I recently saw that Sonos has an optical to HDMI adapter model number OPADPWW1BLK
(to pass the audio to their devices expecting an HDMI input). I have an application where I want to use the optical output from my TV as an optical input into my Denon amplifier. Trouble is I only have an HDMI cable available to send the signal. Does anyone know if I can use one Sonos optical to hdmi adapter on each end of a 25 foot HDMI (ARC Capable) cable to transmit the digital signal?