Network Acoustics Eno Streaming System vs SGC Optical Isolation System

@sns maybe after the silly season. I am taking it under advisement my friend.

Cheers.

Thanks @audphile1 for that confirmation. 
 

I went with the SGC Optical Isolation System and heard a pretty big improvement - so much so I’m contemplating the Optical Module Deluxe. 
 

Here’s a question I’ve been wondering, though. Current setup looks like this:

Mesh router > generic switch > ethernet > FMC > optical > FMC > ethernet > NAD C658 (Roon end point). 
Mesh router > generic switch > Ethernet (15’) > Roon Nucleus.

Nucleus and NAD C658 connected to the same network via switch. NAD does not take USB input from Roon Nucleus.

Question: would FMC between router mesh point and Roon Nucleus have any impact on SQ since NAD and Nucleus are only connected through network switch?

I've done exactly this experiment - using a Network Acoustics ENO (with their ethernet cable) - very happy with the improvement over running ethernet over a standard switch directly into my DAC (Bricasti M3 with network card). Just a more relaxed presentation, a touch more clarity.

Since I had a positive experience with the ENO, I bought the SGC fiber bundle when it was on sale (understanding I could buy the equivalent cheaper with Amazon, but hey, support small businesses and get something that has been curated to work together).  I found that using the optical fiber bundle - which has two ethernet-to-fiber converters and an LPS for the DAC side - made the music quieter - more 'blackground' and concluded noise was reduced with the fiber.  That said, after the immediate improvements, I noticed a much harder edge to the sound - much akin to the digital glare of old.  This seems to mesh with observations others have made.  

I put the ENO between the fiber and the DAC, and it improved things a little.  But I preferred the ENO on its own.

About this time, a Sonore Optical Module Deluxe appeared on TMR, and I bought it.  It did improve the hardness I noticed with the basic fiber converter, but it was still there.  Putting the ENO between them was difficult as the connection would drop - not sure why, so I can't say if the Sonore plus ENO would remove any issues.  That said, I still preferred the ENO on its own to the Sonore.

More recently, I upgraded the DAC to a Bricasti M21.  There, the hardness with the fiber is gone - it seems the more expensive Bricasti may have a better grounding scheme or something to remove the noise.  So I am using the fiber with the SONORE module.  The ENO is doing duty in my other system, where I moved the M3 as DAC.

I think it is hard to draw absolute conclusions - a lot seems to depend on your DAC/Streamer's ability to remove noise from its ethernet connection.  It is interesting that my observations about fiber do echo those of others - there does seem to be something in converting from optical back to wire that has some inherent noise. 

@toro3 only way to find out is to try. 
 

@wjob yup had same exact experience with fiber and Bricasti M3. Had that glsre. Ended up using the Eno alone, sent fiber FMC back. 

my 2 cents

if one experiences an added ’glare’ to the produced sound from incorporating fmc modules to cleanse one’s digital feed, then based on my own experience, i believe it is safe to assume the fmc links (modules, cabling, and incorporated power supplies, particularly on the clean side) were not implemented properly