Ethernet switch worthwhile?

So after trying the stock ethernet cable that came with the ifi lan ipurifier pro which sounded very good, I did back to back comparisons with my Cardas Clear ethernet cable and suttle but good improvement.  The stock cable had a bit of sibilance and a bit less warmth. When listening to Adele it was more clear and smooth and no sibilance thru the  Cardas. One great track from Jackson Browne- Of Missing Persons I could really discern the girls background vocals more clearly and defined thru the Cardas. Not tremendous improvement,  but enough I like it better. Overall the ifi switch is really worth it and I like the more " analog" like sound closer to the songs when I play them on vinyl. 

Thanks for all the positive replies to my post and Merry Christmas to all! 

Cheers 

@lnitm 

Good outcome!  Optical isolation with conventional LAN cables is the key for touch more analog presentation. Funny how a simple change in the chain can shift the entire experience. 

@Initm for even more improvement with the ipurifier pro try one of their upgraded power supplies.  The ifi i power improved things a bit more when I used it with my Aurender streamer.  Happy listening and Holidays to you too.

The "right" ethernet switch is like getting a DAC upgrade.  It can be that significant.  However, not all supposedly audiophile switches (with appropriate linear power supplies), are doing everything they should. First and foremost, lowering jitter, significantly getting rid of noise, and true isolation are easier said than done.  To learn more, take a look at some well written articles/reviews the cover one such switch (Switch X): https://positive-feedback.com/reviews/hardware-reviews/dejitter-it-switch-x/.  https://youtu.be/ugk9mmlzL54?si=WgCl7Oyxe06vbFIi 

Lowering jitter from the IP packets at ethernet level! 

If these things work at all it is completely nothing to do with BS claims like lowering jitter from ethernet level packets. 

Any technical level discussion or measurements, like the ASMR ones linked to, show absolutely no difference, so what would be really good is if someone conducted actual double-blind tests that isolated oroducts/cables that proved to provide any sort of improvement, and then the reason for that improvement could be figured out.

But reducing noise/improving jitter at the ethernet level is just smoke being blown up ar8s of potential customers - technically it would make no difference anyway because of the discontinuity between what is on the network cable and how it is presented to the DAC.