Hector,
The ENO claims to remove noise from the audio stream by filtering the signal. The ID41 also addresses noise. I have discovered that there are several places where noise is a problem, especially with active systems like Meridian with multiple DACS and Amps and there are various ways to address this noise.
Thus far, I have found the ENO to be the best solution that I have found to reduce noise on the network line and it does it passively while (to my ears) not causing any harm to the original SQ. It is in my system to stay as long as it keeps doing what it has been doing. I remove it every few days to verify and so far it keeps performing as advertised. It improves the SQ in all the ways we discuss and consider positive.
The specs are not available to us so I will have to accept the science with only the evidence that my ears present to me.
David
My next question is as follows (by the way I don't dispute your findings).
How can we imagine the included ENO technology that differentiates between noise and the intended signal on the network. I still do not get how this is achieved.
As spinaltap suggests, if I understand his comment correctly, a high quality switch and good quality cabling should provide the same level of SQ, without further investment.
My network has 2 x 8 port switches din rail mounted with a din rail mounted LPS with 2 outputs (one for each switch). OK I lose 3 switch ports, 1 for connection to router and 2 ports to gang switches together.
This achieves 13 usable galvanically isolated ethernet ports for my LAN. I don't think I have the problem that the ENO filter is suggested for and claims to fix.
My mains supply is relatively modern and is fed from a sub-distribution building not more than 25 years old and less than 200 meters away.
Hector