Stack Audio-SmoothLAN Network Filter- WOW!

@brunomarcs few things to consider…

1. Locate your router or mesh node or extender as far from your components and cables as possible - this eliminates EMI and RFI

2. don’t have your network components plugged into the same circuit with your system - this helps keep power your system components draw as clean as possible

3. use a good Ethernet cable with good connectors - doesn’t need to be super expensive

4. Focus on the quality of your streamer and dac

5. use good quality digital cable; depending on your streamer and DAC. Use USB if your streamer doesn’t have the best possible clock or you don’t reclock your signal with external clock or DDC. Otherwise use spdif (coax, AES/EBU)

6. Try a passive network filter like iFi LAN iSilencer

Copper Ethernet is not always bad. Be careful if converting copper to fiber optic, once again keep it all plugged into a different circuit from your system - switch mode power supplies poop back into AC line.

Don’t automatically assume you have noise on your network. Streamer or DAC upgrade will improve the sound quality more than any network tweak. Speaking from experience. Some food for thought…

I just put two SL in series. Even better than one 😀 

@audphile1 Your not a fan of the fiber conversion?  I understand with all the boxes and that's kept me out of it too! 
I  have a wired 25' distance from router to audio gear in another room, lps on router, one of those 22 ga cables from Amazon and a shorter one from ER to streamer.  There is nothing on same circuit,  Js-2 powering ER and streamer, AD queen clock on ER and AD LPS, I really can't hear noise, major pitfall is I'm using my streamer's mobo usb and that's not good until I can rectify this situation emi travels through usb. 
I will not ever buy another streamer I'll upgrade my own as I've followed audiophile lifestyle diy threads on these.  Some amazing stuff over there 

@brunomarcs I tried fiber optic conversion with 3 streamers and it never sounded natural to me. I have the modules in the box sitting around collecting dust.
I also ownef Network Acoustics Eno Streaming System that I used with 2 streamers. I didn’t like the effect it had on the sound either. It mellowed everything out too much, the system was less dynamic and less engaging.
 

But when I moved the router away from my system, I heard immediate improvement in clarity, soundstage and detail. There smearing due to noise you don’t hear gone.

If you like to build streamers yourself that’s very cool. Enjoy!

 

Has anyone opened up this device to see exactly what it does? All filtering not created equal, not saying it doesn't work but I'd like to see the inside, photos at Stack audio only show what appears to be an unpopulated circuit board.

I use JCAT Net Card XE, will likely upgrade to this sooner than later, https://jcat.eu/product/net-card-xe-evo/ Everything exposed, OXCO clocks, plus filtering components one can see. I power my card from external device rather than streamer, in this case Uptone JS 2 fully choked LPS via DIY Mundorf Gold/silver wire. This is truly optimized network filtering and clocking at the front end, this feeds Sonore OpticalModule which then goes to OpticalRendu, usb out to Denafrips Gaia DDC, feeds dacs via Tubulus Ximius I2S. Realize this not a device many can use being my custom build streamer atx board based, but this gfves you an idea of what network optimization should be.

Everything powered by lps, all lps plugged into BPT power conditioner, all streaming components using lps can be plugged into same AC circuit as rest of audio system, its the switching power supplies that feed garbage back into AC line. Precision clocking throughout entire chain is critical, only wish the OpticalRendu had OXCO clocks vs the Femto. Also, I2S far superior to usb for feeding dac, even for those dacs with sophisticated usb filtering and clocking. Keep in mind I2S is native protocol in D to A conversion, also have the data and clock links via dedicated lines, dac doesn't have to separate data from clock. All I2S not created equal, clocking and filtering critical here as well.

I've used a number of network filtering devices in the past, they may or may not work to some degree, remember not all optimizations created equal.