Why do I need a switch?

@jjss49 to do this assessment correctly you should have a well filtered or linear power supply on the ’clean’ side (receiving end) fiber media converter... otherwise, the noisy power supply there puts the electrical hash right back in ... before the dac gets the bitstream, thus defeating the purpose...

I added fiber to my system using the supplied switching supplies and could hear a clear difference. I then added a LPS on the streamer end to complete the setup. I think he is safe taking things in steps.

This might be worth a look: https://ifi-audio.com/products/lan-isilencer/

@mitch2

yes indeed, a simple lps for the ’clean side’ fiber receiver is not much money, and can also be bought on a refundable basis, if one does this smartly

just want to make sure when an experiment is run to learn whether a desired effect can be achieved, that it is not self defeating at the outset...

@curiousjim Proceed with caution.  You should research the technology at multiple difference sources before you spend a bunch of money.    

@12many 

Yep, what I just ordered cost around $70 and if it doesn’t make a difference to my ears, everything can be returned.