I want to replace the router/modem Comcast with a high quality for streaming

I got a Netgear CM1000 modem to replace my Spectrum supplied modem.  I use Ifi low noise power supplies with both the modem and mesh router.  I didn't hear much of a difference myself but since this modem performs better, ie less dropouts, fewer problems, I kept it.  Plus the modem paid for itself in about a year by dropping my ISP's lease payment for use of their modem.  Ethernet cables, I found make a difference.  I prefer silver plated and also found the best ethernet cable should be at the streamer.    

carlsbad2

... Now the audio system will plug directly into the modem ...

For all kinds of reasons, including security and the ability to set static IP addresses, the only thing I plug into my cable modem is a router. I have Comcast and have used a Netgear CM500 modem for years without issue. With the network configured that way, it’s easy to isolate the source of any speed or stability problem.

My Bryston BDP-3 streamer is hardwired ethernet direct to the router, which is at the far end of the house. It’s amazing how a skilled electrician can snake wires through walls to accommodate that, and I’m convinced that no wi-fi is the equal of a wired network. It’s worth the one-time cost to have it done, and my audio system looks neater without all that computer stuff in the room, imo.

I’m skeptical about products such as the Switch X. But I’ve never tried it so I have to reserve judgment. After all, in a world far away, I once believed cables wouldn’t make a difference.

Hi @cleeds ,  I first heard the Switch X at CAF.  GTT's room sounded better than most, even with modest equipment.  I was then able to demo the Switch X in my home.  Having it in my system and then not for a bit was revealing.

I like TP-Link and Asus routers, just generally. I do usually keep a separate modem and wifi router.

One thing to watch out for is if you have a copper connection from the service provider to your modem (i.e. coaxial or Ethernet). Lightning surges from outside the home can jump from there to all directly connected devices. I use a combination of a gas discharge surge protector outside, an Ethernet to fiber connection between the modem and the router, as well as Ethernet isolators at the end of very long (30’ or more) runs.

Because I do use Ethernet for much of my gear, a lightning surge from outside could take out all my entertainment devices (TVs, streamer, HT processor, DVD player.... etc.) and my gaming PC which is why I’m extra cautious.

If you are not in a densely populated area, and you select an unused Wifi channel though, Wifi can be great, and impervious to lightning surges the same way Ethernet is.

@fastfreight Are you selling that ridiculously priced Switch X?  Looking at their website I can see they've made some simplistic changes in capacitors, but otherwise it's a standard 8 port switch.  The "improvements", as much as they are, seem small and mostly outside the audible range.