Home network Fibre optic vs Ethernet

When I had this situation, for future use, I ran some flexible nonmetallic conduit since there were some tight turns.  I ran some string through it to give me something to pull with when needed.

@tvrgeek For data transmission in a home I’m pretty sure you are right that shielding doesn’t matter. My concern is that since these wires are around analog systems shielding Ethernet cable should reduce the chance that any noise transmitted from Ethernet to nearby analog interconnects or AC wires and supplies.

Phonograph connections and preamps are especially vulnerable.

It's like Wireless does not exist. Get a good wireless mesh network and stop listening to the worries of people concerned about the metal in their power plugs. Unless you have $1M system do you think your Ethernet connection is the biggest issue you got? Even if you have a $1M system I doubt it is.

@tvrgeek has his head on straight.  Ethernet is not going to make a ground loop unless you use a shielded cable which is what the audio paranoid are most likely to tell you to do. 

Tv Greek could not be more wrong. My home and our entires subdivision is fiber.

Fiber is fragile, does not like bends, requires skill and equipment to terminate and test,  and is expensive

So don't zip-tie your phono cable right on top of your ethernet  😀

OK, run your Ethernet down the opposite side of a wall cavity from your power lines. Just good dress.    If I had unlimited budget and was building a house, I would be running all my power in BX cable for safety and rodent proofing. BX is not that much more than Romex and a lot easier than thin-wall. 

Remember, CAT-5 is twisted pair so it's rf emissions are pretty low to start with.  Good cable dress, cross at right angles, minimize analog cable lengths etc.  Do the basics.  You can always do a test.  Listen to your record player while having an ethernet cable next to it streaming video or large file transfer. .Worse case.  High level interconnects are far less susceptible. ( well, maybe if running those silly Kimber unshielded twisted pairs as interconnects)   Pick-up in power lines falls under the fantasies domain. ( You do have twisted pair power cords, right? ).  How much WI-FI, BT, LED,CFL, PC emissions around your system?  Do you know how strong AM, FM and TV radiation is permeating everything?   Look at your system as a whole is all I am saying.  I had my DAC Velcro'd to the back of an all-in-one PC and it had zero interference. 

Of course, phone stage sensitivity is why I believe they should be built into the base of the arm. Many years ago, I was trying to build a gain of 10 buffer in the headshell but I could not afford the prototype ceramic substrate cost.  Design had 4 RF bare die transistors and 6 thin film resistors. SPICE said it would work! Then came CD's so I abandoned it. 

Upshift makes a good point. I did a similar, running 3 inch PVC from where my rack was to where my amps, speakers and TV sat.  Long string I could pull end to end from either end so I snaked my balanced lines and video through it. ( S in those days)  Up, into attic, over and down.  The other trick is to  a vacuum cleaner to suck a thread through a run, pull a heavier string with it.