Most models have optical digital inputs that can be monitored through the headphone output (in record-pause mode). You should be able to get one dirt cheap on eBay.

My tv is connected to my receiver via digital optical, the sub woofer I plan to buy is coaxial, if I get it, will the receiver play both the digital optical and coaxial at the same time?

Newer TVs usually drop analog outputs in favor of a digital optical output. The output looks like a tiny, square-shaped door, often outlined in a bright red light (or fitted with a rubber cap).

The most direct, reliable way to link a soundbar to a TV is via an HDMI cable. Simply plug the soundbar into a power outlet ...

And just how limited is the digital optical audio output on TVs these days? Wait until 2025 for your dream TV? Mini LED too bright? | You Asked Ep. 56 ...

Connectivity: USB port for playback of video files from connected drives Connectivity: Optical digital audio output *Feature also available on Premiere+ ($100) but not on Premiere ($80).

There are analog (RCA) and digital (optical) output around back for cabling the player to a hi-fi amp, along with remote in/out. The CD-C603 isn't available to ship at the moment, so you've still ...

The MPMax221 also includes a digital optical input that can be used with devices that offer a digital optical output, allowing a completely digital path. If the audio files played back have been ...

Lacks DVI output; no HDTV capabilities; no Digital Optical output on the back “Why you can trust Digital Trends – We have a 20-year history of testing, reviewing, and rating products, services ...