Streaming, Getting the Signal, Then What?

The cheap switches has no regulators judt ad noise

and the wall wart just multiplies more noise. The LHY switch only $600 and has a LPS power supply built in , plus a high quality temp controlled clock ,

the $20 specials have none of that and at least put in a low cst Pangea power cord..this is cheap my brother spent $4k and makes a Big improvements just for his switch. Linear Tube Audio $700 great LPS  for your router- modem combo.

PS Audio DSD MkI DAC is your first item on the chopping block.
I had and enjoyed this DAC but it’s noisy, grainy and a bit too reserved when it comes to dynamics. I would focus on getting a DAC first and would not make I2s a requirement. You can use coax out if the AirLens to start with then upgrade to a better streamer.
What’s the budget you’re working with?

P.S. forget tweaking Ethernet and network crap. That’s not where you’re going to see any ROI. What you have is fine. Just keep the network components away from your electronics and cables and don’t plug all that junk into the same circuit with your stereo. 

Not true but okay. Fiber will clean it all up including your colon. 

P.S. forget tweaking Ethernet and network crap. That’s not where you’re going to see any ROI. What you have is fine. Just keep the network components away from your electronics and cables and don’t plug all that junk into the same circuit with your stereo. 

I have a pair of fiber converters collecting dust.
1. when you have a really good streamer with properly done network module implementation you don’t need tweaks. All you need is clean power and good digital cable to feed a good DAC  

2. Fiber optic converters used with a streamer built for copper Ethernet in my experience made the sound worse - artificial and glassy. And I tried it with 3 different streamers. Waste of time, money and space. The only thing you’ll accomplish is add more clutter. But…different folks different strokes. I direct funds towards better components but if you are a tweaker, knock yourself out!

Ignore the bs about the ps audio ds dac mk1, the guy doesn’t know what he is talking about. He also doesn’t know that the airlens with i2s makes the ds sr dac sound better. He probably uses usb which is the worst sounding interface to use, the OP is doing it right by using i2s. Also, streaming is here to say, I sold my $15k tt setup with all my vinyl years ago when you do streaming right, it just sounds better. You also don’t need fiber optic converters. There is a simple trick to get your internal network sounding better for just a few bucks.

OP, send me a PM and I’ll help you. I’ve been streaming for 20 years, ex network guy, it’s very easy to setup. It doesn’t matter which router you use, which network you have, copper or fiber.