I am hunting for a very high end manged power filter.

I know virtually nothing about computer remote controlled power systems, but as the core of a power system for audio, I opted for a large isolation transformer made by Controlled Power out of Troy Michigan. The company builds to order for medical and industrial/commercial, makes various sizes, grades and configurations to spec. Mine is a 10kVa with additional shielding and surge protection. It is installed in a NEMA weatherproof cabinet that sits outside and takes 60 amps from the main power source of the house and feeds a subpanel via 4 gauge feeders to various dedicated lines wired with 10 gauge. I used hospital grade receptacles courtesy of Albert Porter (not super fancy audiophile stuff but good). I had a commercial electrician finalize the specs- they got the quote at a wholesale price to them and quoted me a full install price which covered delivery, installation, including pouring a slab outside to hold the cabinet, and all the wiring and sub panels to a turn key install. I suspect the basic cost of the unit I have is in the neighborhood of 5k US dollars, at least to the trade. Here’s a snap of the unit open, during wiring: https://thevinylpress.com/wp-content/uploads/2017/12/IMG_0490.jpg

Thanks @folkfreak - I had purchased the big Equi=Tech wall cabinet for eventual install in a stand alone building, but time and expense got away from me. I eventually sold the E=T to another audiophile. I gather that Torus made those transformers. The Controlled Power are more old fashioned EI types, which throw off a lot of junk, but since it is outside of the building, it's not interfering with anything. I assume you have your wall cabinet mounted in a room somewhere other than the listening room?  The Controlled Power stuff is a fraction of the price of the audiophile products, but built to an industrial standard. I don't know what they do in terms of control systems. I gather the OP wants the ability to reboot b/c of Internet/modem issues. I assume that's doable on a big industrial type system with some ancillaries, but the black box you linked to seems to have it all, without installation costs. As the noted jurist Pierre Laval once said, "it's nice to be on the cutting edge, as long as you aren't the salami." :)