Great upgrade streaming phantoms

[Gremlin]

So you have changed the power supply for your internet modem? Does this modem contain a switch where your 'streamer' and Dialog/Phantoms are connected?
I must confess your post is a little bit unclear even if interesting..

Yes, sorry.

From my cisco (internet) cablemodem => netgear R7000 router => d-link switch => dialog and my phantom golds. All connected with audioquest cat7 and cat700 ethernet cables.

The Sbooster botw on the Cisco internetmodem gives the greatest upgrade for streaming qobuz and Netflix / you tube 4K/UHD

I have now three Sboosters on resp.: cablemodem, netgear router and the d-link switch with very great and uninspected results
The biggest result is on the internetmodem, then on the netgear router and the smallest result is on the d-link switch, but noticeable

Sorry for my englisch.

I may have misunderstood, but are you claiming that changing the power supply on your router has improved the sound quality from your speakers? Because that's impossible.