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Best Ethernet Setup for Streaming Audio

I am streaming from an external drive on my Mac computer to an Auralic Aries, fed to an LKS DAC. I have a wired Ethernet connection from my wall outlet to an AT&T provided modem. The modem is connected to a Netgear router, which connects to a Netgear switch that is optimized for music streaming. Another Ethernet cable runs from my Mac directly to the Netgear switch. I am aiming for the best sound quality with this system. Here are my questions:

1. is it best to have my computer's Ethernet cable plugged into the switch, or should it be plugged into the router instead. It will function either way. But what would be the best option?

2. To provide optical isolation for the Ethernet cable, I installed two TP-Link FMC’s between the switch and the Aries streamer. Is that the best position for the isolation? I have it as close to the DAC as possible. Or should I place the FMC's somewhere else in the chain?

3. Would I obtain a boost in sound quality if I added a second pair of FMC's to the system? There are 4 other options: a. Between the wall outlet and the modem. b. Between the computer and the switch. c. Between the modem and the router. d. Between the router and the switch. In case it matters, the longest stretch of copper Ethernet cable is between the computer and the switch (50 feet).

Any suggestions would be greatly appreciated.
boakey39
dfairc777a
60 posts
 
Kijanki,
Where this USB power comes from? Computer sourced power is not better than wall wort

The output of the router is USB port on my router. I figured that side didn’t matter as it’s being cleaned by the optical transmission (probably not so true based on your above statements).

The streamer side is a 2nd USB port on my Lumin U1 mini. I’m planning to upgrade the power supply in that unit to a sbooster LPS next month.

I was also thinking about a Sbooster LPS for the router, so I may do that now too.
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discopants
149 posts
 
More bandwidth isnt necessarily a good thing, you don't need high bandwidth for the parts of your network that are only dealing with audio streaming.

both the Melco and uptone audio high end switches say 100mz rj45 is better quality than gigabit as wider bandwidth allows more very high frequency noise (and the melco has both).

Even normal ethernet switches can have marked effects on sound quality there are some good threads on computer audiophile on this, avoid fans and check out ground shunting power supplies (some are configured to do this anyway others you can modify the SMPS to do this easily).




cakyol's avatar
cakyol
940 posts
 

1) It does not matter.  Switches and routers run SO MUCH FASTER than any digitized analog signal, even a logic analyzer will be hard pushed to tell the difference.

2) You do not need any optical isolation.  Wire will work perfectly fine, unless you are running miles of it.

3) No.  Digital is digital, regardless of how many billion devices you add in between, ALL ethernet signals as per the standard, ARE THE SAME: Inter frame gap, the hunting preamble, the bit rate are ALL STANDARD.  Otherwise nothing would work with each other.

Typical lag in an ethernet frame as it traverses a switch is in the microseconds range.  It will never affect any sound quality.
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