Surge protection works best when it's cascaded in 3 layers. One on the main panel, one at a subpanel, and one at the equipment rack.
You also need an isolator like an isomax on your data coax.
And your earth ground needs to be highly effective, in order to drain the charge from the surge...
Probably a horn of some type.
I have heard Gobel a few times. People I know rave over Von Schweikert. Curious what they hear in it. Are they similar. Or is Von Schweikert special in a way others are not.
I have a Fosi. The version with the pretty heavy outboard power supply. It pretty much sucks compared to say my Musical Fidelity A3cr. I assume your Topping sounds better.
What matters to me is sound quality. Euphany Stylus was recommended as the best sounding, headless player out there. Mojo Audio who makes my server loaded the system onto the server.
Using the Stylus software does convert the server to a desicated device that can not opperate any other...