Very good AES presentation on inter connects and ground loops.


If everyone has not read the papers on Jensen Transformers on interconnects by Bull Whitlock I suggest doing so. An update that makes a lot of things clear was a paper he did for AES in the subject, a bit updated.  Search You-Tube for it. It is an easier presentation than app note 009.

Makes me wonder about the current fad of XLRs on home systems with 1M cables and why folks like Chord have RCA only.  Do you trust China Inc. to do it correctly? Even ASR has identified most of what they measure does not follow IEEE or AES standards let alone understand the details of the architecture. 

tvrgeek

OP:

Ahhh, that explains the really funny review I saw of Amir with a HT processor or receiver complaining about the noise caused by using HDMI from a PC without understanding how bad a PC is for ground loops.

Thanks!

Erik

As helpful as Amir is, and he is a real engineer, there are some gaps.

I have no issues using PCs as music servers, but I use correctly designed isolated USB DACs and "decent" cables.  All my system is plugged into the same power DC blocked and filtered power strip.  No problems.  HDMI on the other hand is a disaster and who ever designed the plug needs a dope-slap. Other than going to fiber transceivers, not sure how to fix HDMI issues. 

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There is  much more to. It then that ,myself and many others in our audio club some are true electrical engineers. ,for. Example digital noise can  travel house to house that is why I isolate the coaxial filter, plus the Ethernet the Ethernet hub I use has low noise regulators ,linear-power supply,as well. As A  OCXOover controlled precision clock feeding the Ethernet cable , and put in a upto date Modem router combo ,I bought the Motorola 8702 which has docsis 3.1 which is much faster, bigger buffer , even the wifi for the tv is better , and having a Quality LPS power supply to the router a 12v 4+ amp is night and day better sounding then the garbage wall warts that come with the router ,I have -0 wall warts in my system 

and quality Ethernet cables over $4500 the 2 Ethernet, and usb cables Ethernet switch and LPS , efore the dac and streamer .if you want great digital performance 

to surpass turntables youhave to spend $$ with the same precision you give to any

high quality turntable arm and stylus leave no weak link in the chain  ,

and with XLR if all components  are truly balanced for each item then sonically  it’s much more quiet. Transformer coupled. This too cost $$ to do it corrrectly.