Do you know how this SoTM filter compares to the ENO Ethernet filter from Network Acoustics? I have been very pleased by the improvements in streaming sound quality when using the ENO filter. In my system, the filter has reduced digital harshness while improving clarity and naturalness. Network Acoustics is careful not to claim that their filter works by preventing packet loss on Ethernet networks, but rather by filtering out noise that can travel along Ethernet transmissions and have a negative impact on the analog signals that are output by the DAC. Some users of switches such as the Etherregen report that the ENO isn’t needed if sufficient noise reduction is accomplished through other isolation methods, while other users report that the ENO filter makes the Etherregen unnecessary.
I started a forum thread discussing the ENO filter earlier this year if you want more info about it. I’ve also noticed some discussion on AudiophileStyle of using the ENO filter in combination with several SoTM products to improve network audio.