[Puma Cat]

Originally Posted by Still-One

The optical connection can only pass data and not noise as is possible with ethernet.

I have no doubt that the etherRegen will function as designed and sound great but would feel better by using the SFP connection.

and

Originally Posted by crwilli

I have read about various options that in laymen’s speak, converts the copper Ethernet to SFP and back to a short high quality copper cable all to reduce the noise.

Optical will provide galvanic isolation, and also attenuate the impact of RF and it will not pass low- or high-impedance leakage currents, but fiber itself will not remove, reduce or eliminate clock phase noise from the upstream clocks connecting components, e.g. routers, switches, etc.

Also, my hypothesis is that Crystek CCHD-575 XO clock in the EtherREGEN will be a (notably) better clock than the clock in the Sonore OpticalModule (OM) with respect to clock phase noise, and I'm absolutely certain the isolation transfomers on the RJ45 jacks of the EtherREGEN will be superior to the RJ45 jack on the OM.

My plan is to move my OM from the Main Rack into the study where the Mac Mini is, connect to the OM via copper Shunyata Sigma Ethernet to it from either my Pace router or a switch, then run fiber out of the OM directly to the optical transceiver in the SFP cage on the A-side of EtherREGEN, and then Shunyata Sigma Ethernet from the B-side (on the other side of the "moat") to the SOtM UltraNeo network bridge.