Streaming, Getting the Signal, Then What?

Veemeke, You haven't stated what you don't like about the sound of your system. What do you feel you're missing? I'm struggling to understand what are you trying to achieve. Personally I don't believe that investing money in network/router will make much if any audible difference. Netgear is reliable router. Are you streaming music from local library or some streaming service or both? If both do you hear difference in sound and is it coming from local library or streaming service?

@veemike 

Have you tried a filter? One thinks they have no grain in their streaming, until they try something that removes more noise and grain and then they realize they actually did. 

I use an etheregen and it works. Money back guarantee- Alex (Uptone) has sold over 3,000 of these and had about 5 returns which says something. 

The newer one on the block is the smoothlan, also a money back guarantee. I haven't tried it yet, but for under $300 it is a no-brainer. 

check out this thread: some including the OP use both the etheregen and the smoothlan and claim improvements. 

If you have a larger budget for a switch/ filtering this may be the best option: Tempus I have read good things about it- feel free to browse user's reviews of it. 

*you know what? I just re-read my comments above regarding the smoothlan being a no-brainer, and I am going to put my money where my mouth is - just ordered one- I'll post in the above thread my impressions of it. 

Mclinnguy is right Etheregen is great. Audio became a little quieter.  It immediately improved detail in LED TV picture too. 

The newer one on the block is the smoothlan, also a money back guarantee. I haven't tried it yet, but for under $300 it is a no-brainer. 

Thanks tshark, mclinnguy and nigeltheflash. This is exactly what my OP requested; working with what I already have massaging my source/stream into my AirLense. 

@veemike 

You are making my life a bit easier ( also at 70 years of age ) as I am in the same situation and looking to improve my digital streaming environment with some solid gear in place - cabling, streamer, DAC.  I have watched a number of videos on this and sought out and read most of the posts here on potential routes to follow.  I cant offer advice yet but can confirm the path I am heading down as it follows a similar thread to what @tshark and the others you mentioned above have suggested.  My approach is three pronged with LPSU's, a switch/switches, and some type of filter.  I ordered last week an LHY LPSU for my router and am looking next to add a switch - something like the DLink or the Zyxel mentioned in the post above.  This is an inexpensive way to see how the switch works in the chain.  If this provides some improvement, I am than willing to invest in a switch such as the LHY SW6 or similar.  Lastly I will look at the various ethernet filters - something like the Etheregen, Smoothlan, or possibly a bit pricer Network Accoustics network filter.  Taking this approach I can see how each step impacts the streaming and its a somewhat minimal investment vs new components.  Not offering "coaching" but my 70 year thoughts as to what you are thinking through.  Good luck and thanks for the thread!