30ft Ethernet vs Spdif coax

[greyscale]

Have to make a 30 ft run from a Digione Sig to a Amp/Dac. Would a ethernet cat 6a be preferred over SPDIF coax?

[greyscale]

I decided on Cat 6a 30ft run from switch to Digione then SPDIF to dac/amp. Thanks to all who answered.

[Account Closed]

30 feet of single ended coax would not be my choice for anything. At least cat6a ethernet is balanced. 

[Maldur]

On 9/22/2019 at 4:21 AM, bobflood said:

30 feet of single ended coax would not be my choice for anything. At least cat6a ethernet is balanced. 

Actually, that coax carrys balanced SPDIF signal because SPDIF transformers on the both end, build inside devices. Only very low quality devices are built that way where is no transformers used. 

So, in quality devices SPDIF coax is carrying balanced signal and that is also galvanically isolated. 

Ethernet is basically the same thing, only 4 channels/pairs is used at time, not one like on coax. Just the cable itself is more cheaper than same lenght of quality coax cable.

[steven.y]

It's important to use well shielded quality coax cable, like Belden 1694A, as well as terminate both the end properly (75ohm),  Use BNC connector for the DigiOne Signature side.  I got cable from Blue Jeans Cable ( https://www.bluejeanscable.com/store/digital-audio/index.htm).  If the amp/dac side is not terminated properly, it might be useful to insert a RF attenuators to reduce reflections. (also see http://www.johnkenny.biz/home/rf-attenuators).

Steven

 

[JohnSwenson]

What is the equipment on both sides of the 30ft? I personally would prefer either a copper Ethernet or optical Ethernet  for long distance runs.

 

John S.