@Kingrex your panel/solution looks great. A point on the rack mount aspect: the TT7 sits on the floor. It has four female thread fixtures to accept footers, but I would not describe it as suitable for rack mounting. All duplex fixtures and main feed to the TT7 are on top of the unit.
Thanks for your always-helpful comments above.
Maybe rack mount is not the correct term. I should have said a filter that is located at the audio rack. I doubt anyone rack mounts there Everest either. I have seen a few PS audio installations where the power supply sits on an amp stand. If I were to have Torus unit that was in the room, I would sit it on a amp stand myself. Its a lot easier to gain access to a 100 lb plus pound beast when its in the open and accessible. Especially when you may be getting in and out of it.
You can definitely get an in the room Torus isolation transformer for more the price of a AQ or Shunyata piece of equipment. My only concern is noise. I would be interested to hear from owners of the RM20, RM40 or AVR Torus products. Do you hear the core hum in the room?
I focus on wall mount as I can get a larger more robust isolation transformer with a lot higher current capacity and keep the noise as well as physical mass out of the room. Its the same duplex in the wall feeding your rack. It is now filtered and all the outlets are at the exact same voltage potential. Less ground loop potential.
FWIW, an Isotek Syncro is a very good DC block. I had one on a SS amp and I liked it. They are $2700. If you don't have a power strip, it is only 1 IEC on the end. AQ or Shunyata give multiple outlets. All of these devices sound different. I did not like the Isotek on any of my tube amps.
I do know there are hundreds of recording studios that have Torus transformers in them. I know the guy who installed them. There is a reason recording studios use a large frame transformer.
I guess it is wrong to say you can not climb out of a noise hole with a filter. It is possible but it may cost as much as your amp. There are times where you can not. As Alrainbow asked, does it hum with only the speaker connected to the amp. Nothing else connected to the amp. The input signal cable is shorted. If it still hums out the speaker, it is not a ground loop. If it hums out the speaker its an amp problem. If you short the input and only have the speaker connected and the transformers in the amp physically hum, you may have DC in the AC that is saturating the core and a filter would mitigate most all of that problem. The question is, what is the correct filter for your equipment. And can it be used globally. Why not get the most use out of a filter if you are going to invest in one.
And might I also note, Atmasphere is dead on correct when he says his equipment has built in filters that work. Many good manufacturer have filtration built into their equipment that can easily handle the common noise from the utility. I believe that is a reason direct into the wall has worked so well with amps. Then there is equipment that seems to have a hard time with noise. Or it just has issues all on its own without being exacerbated by poor power quality. My Dartzeel NHB108 is by far the most quiet amp I have ever had in my system. There is no sound from the amp or the speaker. But even it leaped forward in performance when I added global filtration with the Torus. So I would say there is some amount of noise even good equipments internal filtration is not mitigating or handling at the highest level. And that is where I believe good filters excel.
Rex