@treebeard1
I have, in the past, used Sonore and Uptone products in my chain.
Though I am using a linear power supply on my Modem and Router, I cannot answer your question definitively "with the EtherRegen downstream" since I do not have one in my chain.
Linear power supply reviews and owner feedback are consistent in pointing out a lower noise floor, greater transparency, and overall improvements in sound quality across most descriptors.
Given the length of your generic LAN cable run (50 feet) I believe you will achieve better results by doing the following:
Step 1. Forgo the LAN cable run by adding a Mesh Router Satellite close to your audio system / EtherRegen.
Modem > Router >>> WiFi to >>> Mesh Router / Satellite
This will isolate and separate your primary Modem and Router from the audio section of your system.
Step 2. Use a linear power supply on the Satellite.
Step 3. Add a short run of a high quality LAN cable from the Satellite to your Ether Regen.
There are many decent, low cost linear power supplies. I use the HDPlex for my less critical accessories. Something along the lines of HDPlex, etc. will deliver results. However, in your application I suggest going with a higher quality linear power supply.
I use the Keces P8 Ultra Low Noise linear power supply. There are other options, but most come in at a higher cost. If you want to spend less, then consider the Keces P3.
The above approach will deliver a significant return on your investment and effort. There are a couple of additional steps you can take that are additive to the above. Those can be saved for later.
I am curious how many are using an LPS on the modem and router (I have both) and what the result has been. I have heard this can be a significant improvement but I'm not sure how significant those gains would be with the EtherREGEN downstream.
Brick Wall power conditioner > iFi 12v power supply (2) > modem and router > 50 ft. Ethernet cable (generic) > EtherREGEN with LPS-1.2 > PS Audio DSD Jr. bridge > LTA MZ2 > Halo A21 > Tekton DI
