Ethernet to SPF converters. What's your experience?

So, have you hooked up all three — switch, DDC, and DAC — to the external clock? How was the improvement?  

How does the 3-way connection compare to having the clock synchronized only between the switch and DDC? I heard someone claim that the 2-way connection is better. Could you please verify that? Thanks.  

@lanx0003 I have the clock connected to the N18pro, the U18 ddc, and the X-30 dac.  I hooked it up that way from the start and haven't tried any other combination.

I like the addition of the N18pro in that configuration.  

My ethernet is hard wired to an eero router.  One GB speed.  The router runs copper to a Chord 8Switch, powered by its wall wart.  The hardwire ethernet is then connected from the switch to a Roon Nucleus and a dCS Bartok DAC.  Some time ago I purchased a F/O converter from Little Green Computer that converts the digital to fiber and back again to copper, with a short lead to the DAC.  Powered by a separate non-switching supply.  

I’ve had it in the system multiple times and can hear no difference, so it gets pulled.  Less stuff for the signal to go through, the better.  

My DAC has it’s own isolation process so maybe it’s just not needed.

I have an Infigo Audio IS-1 streamer.  It includes a converter that accepts Ethernet connection and converts it to optical for inputting to my steamer. 

From the Infigo Audio web site “The gigabit fiber optic isolated network connection improves audio quality by eliminating network noise and jitter. This separation between the ‘dirty’ network and the clean audio chain ensures that RF and EMI interference, as well as high-impedance leakage currents from network devices, do not degrade the audio signal. As a result, digital music reproduction is cleaner, quieter, and more transparent, providing a more natural and lifelike sound experience”.  

In summary, my Ethernet source drives a netLINK Ethernet Media Converter model HTB-GS-03 with a fiber optic output driving a fiber optic cable to the streamer.  A 5V wall adapter powers the netLINK.  The streamer’s only digital output is USB to the DAC.  Infigo chose USB as the sole output format because done right it provides ultimate performance.  Any other format would increase cost while limiting bit rate, sample rate and ultimate performance.   

Fiber optic isolation in this case improves audio Quality by eliminating network noise and jitter. This separation between the ‘dirty’ network and the clean audio chain ensures that RF and EMI interference, as well as high-impedance leakage currents from network devices, do not degrade the audio signal. As a result, digital music reproduction is cleaner, quieter, and more transparent, providing a more natural and lifelike sound experience.  

I suggest you test using the converter and see how it sounds.