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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's avatar
richardbrand
1,436 posts
 

Trying to get this thread back to digital (could have been my fault it got derailed). I came across this in a TAS review of the Bluesound Node Icon Streaming DAC, which offers a snapshot of why streamed sound can be different before cables even come into consideration.

I should also state that I find reviewing music servers fraught with uncertainty, to wit: How do you determine exactly what or what combination is responsible for the sound you are actually hearing? First, there is the original sound itself, then the source files themselves, that is, what the labels provide, how they were mastered and transferred. Third, the servers, none of which sounds exactly like any of the others. Fourth, the DACs, the chips, the filters, the output stages, whether you use Ethernet or Wi-Fi, or USB or optical—all this, by the way, without even going near the matter of connecting cables.

Without even consulting ChatGPT (or chatgbt, whatever that is)

audphile1's avatar
audphile1
8,080 posts
 

@richardbrand there are many variables in streaming with various factors, external and internal, impacting the end result. Streaming software is one of the biggest difference makers.

richardbrand's avatar
richardbrand
1,436 posts
 

The Bluesound Node Icon Streaming DAC uses two ESS Sabre dacs, one per channel, which can natively handle DSD up to DSD1024.  

Nevertheless, I suspect the Bluesound down-samples DSD to PCM, thereby losing information.  It has a maximum input rate of DSD256.  Even reading the dac Data Sheet does not tell the whole story of how DSD is handled, though it can tell you how it is not handled

audphile1's avatar
audphile1
8,080 posts
 

@audio-b-dog I am surprised the “New Moon Daughter” was originally an analog recording in 1995. I’ll have to get that record. I happen to like that album and I still have the original cd that I bought when it was released. 

audphile1's avatar
audphile1
8,080 posts
 

@richardbrand it might support native DSD played from a device connected via USB and potentially via network.

I never owned Bluesound anything. I know my Meitner DAC upsamples everything to DSD1024 using Ed Meitner’s FPGA. Everything sounds pretty good though this DAC. 

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