Improving streaming SQ

Thanks to all who have contributed to this discussion.  No one seems to have any direct experience with the Artistic Fidelity GISO GB Isolator, but I did find a dealer in Germany who is willing to refund my $$ if I'm not completely satisfied with it, providing I pay with PayPal  and pay return postage.  I may do this.  Although audioengnr's solution would probably sound  best, I'm not looking to spend over $2k to find out.  

However, in researching I did find that Transparent Audio makes a two port $155 Plug-In Protector that accepts the ethernet cable from your wall, plugs into your power conditioner and then provides for a shorter ethernet cable to reattach to your streamer (In my case the Aurender A10.)  My local dealer demoed this contraption that they affectionately call the Transparent Widget.  Of course the 1 meter piece of ethernet cable happened to be Transparent's $275 cable so total cost would be $430.  They streamed Tidal and Qobuz (16/44.1) for the demo and both I and another customer did hear a significant improvement in SQ.  The dealer said it had something to do with "draining" the noise.  FYI in case any of you have local Transparent dealers and want to listen for yourselves.  

Regarding Tidal, it was interesting to learn that there is a difference in apps between Desktop and Android.  I would still like to know what the "Exclusive Mode" brings to the table and if non MQA DACS are in any way affected by the MQA Passthrough.

Have a look at Network Acoustics ENO. An Ethernet RF filter. I’ve heard it as I make it, and it really transforms streaming. 

Lots of options here, IMO.  I got good improvements in streaming sq with these changes:

• Replaced Comcast cable router with a Motorola MG7550
• Added a DJM Gigafoil v4 ethernet filter
• Router to Gigafoil cable: Blue Jeans Cable cat6a ethernet cable
• Gigafoil to Streamer cable:  Sablon Panatela Reserva
• Sbooster LPS on both Gigafoil and Motorola router

Some cable routers with intel chipset can be extremely noisy.  Great thread here:  https://www.whatsbestforum.com/threads/cable-modems.30094/.   Special thanks to @david_ten for that one.

The Gigafoil internally converts ethernet-to-optical and then back to ethernet.  The premise being that converting the signal to optical will remove any build up of clock and/or power noise at that point.

In my system, the above was a significant sq improvement for streaming Deezer and Qobuz via my DCS Network Bridge.

@veroguy I love my Gigafoil (w/LPS) and just ordered another for my second system. Also had an EtherRegen upstream just ahead of the router. I recently added the ENO Ag after the Gigfoil and right before my Streamer. I felt I didn't need the EtherRegen anymore. However I don't have my router powered with an LPS. Did you try A/B'ing with and without the LPS on your router? I don't want to invest in another power supply if it isn't necessary.
-Alex

@rareace , I didn't do a formal A/B with LPS on the router.   But I remember a slight uplift in SQ.  At the time, I was using Netgear Powerline adaptors to get ethernet to my streamer from the router. (this uses house electrical wire to send packets)   I was having intermittent dropouts.  The LPS on the router solved it.  So the change did "something".  I no longer use the Powerline stuff, and run a long cable to the streamer.

In theory, with the Gigafoil downstream it shouldn't matter.  I should A/B router LPS.  If I do, I'll report back.

Thanks for sharing your experience of using the ENO after the gigafoill. I've been considering it.  I'm going to try it out now.  I think the Gigafoil is a great, but little-known, product.  Thanks for sharing the etheregen experience, too.  Been wondering how it stacked up against the GFv4.