would innuos mk3 streamer benefit from network filter

You can tweak the Settings for better sound :-

Go to Settings

-> Audio -> Select low latency

-> Advanced Settings

-> Compact music library database

-> Clear queue cache

Yes, the filters, cables, etc offered by Network Acoustics do a great job on the ethernet side of things. What usb cable and dac are you using. Also, ensure that your settings in Roon bypass the dsp, etc.

Thanks for the responses.

I bought the unit used so break in shouldn't be an issue.  But I will give it time,  maybe it wasn't used much.  The Lumin u2 mini improved greatly with time.

I am using it with a Schiit Yggdrasil.

No power conditioner.  Decent cables but not real high end.  But the Lumin and the Aurender both sound great with this setup.  I was thinking maybe the Lumin and the Aurender somehow did a better job filtering the ethernet,  in which case a filter would help?

I am sure I could get better cables, switches, routers etc.  but since the Lumin and Aurender both sound great I really don't want to go down that road.  

These are all being used with a Raven Audio Blackhawk which has never been a bottleneck with anything I have used so far.

Thanks for the tips on tweaking the sound. Tried low latency, didn't seem to make much of a difference , I will also try the other tweaks,

Maybe it is just a bad system match or just my particular hearing proclivities.

Thanks ro all who replied.

I had a similar problem

The quality improved by adding a very decent USB cable (FTA sinope), Innuos Phoenix USB and power filtering, but was still too digital.  Too hard.

What fixed it was the ethernet stage, namely adding an Uptone EtherRegen, then further expansion of its secondary components:  LPS, fiber input into its SFP slot, and finally a clock.  It now sounds smooth, rich, detailed and very musical.  What sibilance previously existed has now gone.

Given I'm reclocking the Zenith's output already, it's remarkable how also reclocking the ethernet stage improves things further.   

With the new EtherRegen out in June you should see plenty of v1 on eBay etc

Which Innuos Mk3 streamer are you using? Is it the ZenMini Mk3 without the linear power supply unit, the ZenMini Mk3 with LPSU, the Zen Mk3, or the Zenith Mk3? The sound does get better as you move up the chain, and the strategies to improve the sound may vary with each specific unit. For example, adding the LPSU to the basic ZenMini should improve the sound significantly, but the Zen and Zenith already have excellent power supplies.