Do I need an expensive digital cable?


I have been using a fairly inexpensive optical cable to connect my CD transport to my Moon 280D streamer. I was told that an SPDIFcoax cable would sound better. For an experiment I purchased an inexpensive Pangea coax cable. It didn't sound at all because its terminator ends did not fit snugly in my equipment. I consulted chatgbt who often gives me audio advice. It advised that for the short run of 1 meter, an RCA interconnect would work. It did. And sounded much better than the optical. Chatgbt said that RCA interconnect was good enough.

Now, there is a twist to this story that might make those doubters think twice. A digital cable carries packets of information that are rechecked to assure that the streamer is recieving correct information. There is the timing concern, though. But my Moon 280D has an asynchronous DAC with a clock as part of the DAC. Any information sent by my transport, whether it is clocked by the transport or not, will go through the Moon's asynchronous DAC's clock. So ;there shouldn't be a timing problem. Should there?

Can anyone make a case that I should buy a "better" coax cable?

audio-b-dog

@richardbrand 

I do have a unique perspective on science, but that would be for a different forum. Regarding audio, however, I got into some big arguments with engineers in the Stereophile letters in the nineties, before Peterson bought them.

The argument: engineers proposed was  that decent wire (I can't remember their definition of decent) is all that is needed for speaker cable and (if I remember correctly) interconnects. My ears told me that wasn't true, so I accused them of being all left brain and said they should open up their right brains to empirical information that contradicts their long-held formulas. It got nasty.

From time to time I read articles on different DAC technologies, etc., and have an overall understanding. But as far as I am concerned, just let me listen to a piece of equipment and make up my own mind. I have been most affected by reviewers like the late, great Wes Phillips who I listened to carefully. I purchased a Conrad Johnson Premier 14 because he lauded it and got rid of an ARC LS22 because he opened my eyes to things I wasn't hearing, I'd been so seduced by the mid-range.

@audphile1 

Chatgbt can get pompous and dogmatic, so I also look elsewhere for information. Obviously, there are contradictory points of view on the web, and chatgbt forms an opionion from one set of data, leaving behind the other. As a writer, it is most helpful at finding words my old brain can't shake loose. 

@audio-b-dog 

I got into some big arguments with engineers in the Stereophile letters

I imagine the engineers got quite frustrated angry

he opened my eyes to things I wasn't hearing

Pictures, maybe?

"engineers in the Stereophile letters” LOL

these guys are failed engineers! real engineers create/design things’ we are talking about! 

"cable-induced timing issues"

biggest variable in digital signal transmission is a Tx/Rx circuitry, which supposed to be optimized for variety of cables, typically outlined by interconnect technology Industry standard. 

From what I have seen so far, I am not convinced digital cables make a difference.  This reviewer has made many videos about different USB cables and described how they sound different.  However, when he and his cohorts had to do a blind test, none of them could reliably tell the differences and identify the expensive USB cables.

https://www.youtube.com/watch?v=hQfuyioIgKI&t=51s

I am not claiming to be right.  I am just saying as someone with a ~$50k system, I have not yet seen enough evidence to spend $500+ on a USB cable for my system.