I'm trying to connect my Marantz pre to my Netgear via ethernet cable. When i do it practically kills my internet connection. The remote app works just fine, but at the cost of functional internet.
When i connect my Oppo 103 the same way the app works just fine and it doesn't have any effect on my internet connectivity.
Any thoughts? Thanks.
Id say that there may be a short in either the cable or the Ethernet port on the Marantz. If you use the same cable that the Oppo uses and still have the issue then it's the marantz. There may be a slight chance that you have an ip conflict or some other conflict that is causing this but I doubt that.
Try these options to test.
Do a factory reset on the marantz.
Connect the marantz directly to the router with a known good ethernet cable. See what happens.
Try the marantz powered and then unpowered. If you have an issue unpowered it's a short.
Put a network switch between the marantz and the router. The funkiness in the marantz may be able to be isolated by the switch.
If any of these prove definitive you will be able to narrow it down.