Anyone tried fiber into EtherRegen SFP?

I had audible gains putting a Cisco 2960 switch before my Etherregen and using fibre between the 2.

Which SFP modules you use apparently will affect the outcome though,  I've only tried a pair of very cheap 2nd hand cisco ones that are not particularly fast nor particularly long ranged. I can look up what they are if necessary.

I've got a rfi/emi filter on the powerstrip for the cisco and a power cord with a pretty chunky ferrite for it. I have it on black ravioli base and footers too.

@discopants , @sns 

Thanks.  Useful info there.  Regarding the SFP modules, they would be supplied as part of an audiophile fiber kit, so am assuming they're fit for purpose - though this would seem to be a highly subjective area.  As far as I can tell from an email with the ADOT guy, he just tried loads of different modes and modules until it sounded right for him.

True, I have tried previously a very cheap fiber bridge (2 old FMCs from eBay for £11) and it wasn't pleasant.  

However, based on putting better quality ethernet cables in front of the ER I suspect a quality fiber hop may allow the ER to sing a little better.

@lollipopguild Yes. Correct.

I also use the Ubiquiti Networks Networks UniFi Switch 8-Port 150 Watts. I tithe to ubiquity. They make great stuff and their app is easy enough to sort out.

I have the entire ER kit, clock, SFP, etc. PM me if you want. I was going to use in another whole house (so-so) system.

I am using the Finisar transmitter/receiver combo. The set I bought were quite pricey and at the time considered one of the better sounding units. 

Although, I'm not sure if these things do contribute to sound quality.

ozzy

Issue is if one doesn't have optical input on streamer and optical ISP we're converting ethernet to optical back to ethernet. So consider optimized ethernet> optimized optical> optimized ethernet. This would be something like router or switch (both need optimization via lps, cables etc)> two opticalmodules with Finisar, or possibly Telegartner unit Latik pointed out (lps, cables,etc)> optimized ethernet either before streamer or within streamer, in my case within streamer via JCAT Net XE card. So now we have total optimize network from router through streamer.

Compare to simpler all ethernet setup. Only need in most cases a single ethernet filter, something like Acoustic Network Muon. Will optical/ethernet setup described above be superior to this simpler ethernet setup? Lots of complexity involved in the hybrid setup, also expense. For me it would have to pay off big time to go with this complex, cluttered arrangement. Still, could be worth all the compexity, I'm not that far away from attaining the complex hybrid setup if I went to one streamer setup, would only need to purchase a single OM, have every other piece to make this happen. With two box streamer setup, optimizing both sides of  server  gets really crazy with complexity.