Anyone tried fiber into EtherRegen SFP?

I have  used it and it makes a difference keeping noise on the dirty end 

the media converter too makes a difference . I use the excellent Linear Tube Audio 

LPS which makes a noticeable improvement to the regen, and comes with a excellent DC cable ,  I should mention a decent power cord like the Pangea sig mk2 is good for a Pc not too expensive.   Little green computer sells respectable LPS power supplies for the router ,and converter Ethernet to fiberoptic 

it all counts is sonics, weak link in the chain . Iuse a combo motorola 8702  which makes a nice improvement , uses the faster docsis  3.1 

We wish to welcome you to Munchkinland! ER with fiber into its SFP port... Yes I did try. With my gear, I found the sound a bit too too sterile and went back to using ethernet cables in/out as that sounded more analog. YMMV.

Per Uptone’s instructions when using SFP the EtherRegen can only have one Ethernet in and the SFP out. I run a room nucleus (powered by the UpTone PSU) so there’s that in need of ethernet too. One in and two out are needed for my setup.

Using an external clock, high quality ethernet cables and an upgraded PSU helps too. Hard wired ethernet.

The Telegartner M12 Switch Gold w/ its PSU is even better than the ER. Is it worth three plus times the cost of the ER (w/ clock and PSU figured in). To me yes.

Alex at UpTone is an excellent guy and will answer any and all questions. Real support from a real person. That’s part of what you’re getting too.

Not sure if this paper has Swensons explanation of why a FMC in front of fibre is a good idea. It could have been in a thread post on some site. However, this paper may aid in understanding in this thread. Some people are posting that this is pseudo-science, but my ears are a believer, at least the eR as an FMC.

UpTone-J.Swenson EtherREGEN 'white paper'.pdf (shopify.com)

Supposed to remove the RF buildup in a long Ethernet run.

Even as little a a foot of it.

@wsrrsw You mention Ethernet in and SFP out.  Unless we're using different terms to describe the same thing, I'm wondering about SFP in (A side) and ethernet out (B side) to streamer