Looking for a true upgrade in sound quality

I recently added the SmoothLan and was pleasantly surprised. Also although there it took a few days to process my order (they are busy), shipping from the UK to Cali was 3 days.

btw I tried the IFi filter and send it back. 

Good to know, thanks. 

If you are serious about streaming, I would consider investing in Ansuz Acoustics Power switches. I tried first Silent Angel Bonn N8 and English Electric 8Switch switches (with Supra CAT 8+ ETHERNET cables) and while the improvement was there it was marginal. And then I got Ansuz PowerSwitch A2 and Oh My God! The difference in sound quality was just shocking! I stream music in four different places and in each case, it was like replacing a sound system with a much better one. Even the cheapo system in my exercise room sounded perfectly musical and satisfying. If I were to start again, I would spend more money on Ansuz PowerSwitch and save on the rest of the system. The biggest one piece of equipment improvement I have ever experienced. Who knew that cleaning up the noise on the Ethernet line could go that far! 

To answer the original question, I have gotten exceptionally good results with dCS Network Bridge and Merason DAC1. This setup has a very musical and organic sound. When you forget about the equipment and just enjoy the music you know that you have got it right.

A capable system indeed. Try the tweaks for the network, hopefully that smoothes things out. As for DAC’s I will second the Merason suggestion, I have a Reuss, very natural.