What is the best BNC Digital Cable under $4,000?

I have never heard a Toslink cable so I can’t comment. I am pretty sure I would hear differences in conductor metal, dielectric material, shielding, and directionality. 

@geoffkait

Still, you believe data cables can alter tonal balance, stereo separation, etc.? If so, I ask for an explanation as to how it can actively alter a digital transmission.

I just answered your question in my previous post.

@geoffkait

You mean the quality of the voltage/current? As I pointed out, noise-rejection is the only factor then.

I ask how one digital cable can have more bass than another, or a more forward sound, or better instrument separation.

These aren’t line/high level connections where capacitance, resistance, impedance, etc. are factors than can have effects if brought to extremes.

And to others users, just like how I don’t need to travel around the world to know it’s not flat, I don’t need to listen to expensive data cables to know they can’t result in better stereo separation.

I hate to judge before all the facts are in but there are apparently other factors, as I just commented. I guess we’ll have to agree to disagree.