As it stands now I have two Troy's, (one Original and the other Signature version) and two Silver Minis. I have the Sig. version clamped (many times) directly to a 2 gauge copper wire incoming from a separate isolated chemical ground which is why I haven't experimented with the two Troys on the negative R,L posts of my amp (if this is what you are alluding to). I did however try one Entreq and the Original Troy on R,L posts just for kicks and thought that the physical presence of the Troy in my smallish room interfered with any improvements that might have been gained with such. I have had the Mini's on my L,R posts for almost a year now and it's made a significant leap in my system, and can't wait to hear what the Everest's do.
FYI, I have all my audio components hooked to the Signature, and my computer related stuff to the other Troy. I have a 5Q panel that I plug only the PSU from my amp into (main system) and all my computer stuff is plugged into outlets coming from the digital filtered breakers. My DAC, battery PSU for preamp, and PSU for SOtM 200 are plugged into a Running Springs Audio (pre API) Maxim power conditioner.
I have all my source gear (except my Studers on the other side of the room) hooked to the Troy Sig. the 'new' dart preamp, power supply for my tt, arm board for the turntable, Lampi GG dac, and power supply for my server.
I have only the dart pre hooked up to the Entreq Silver Tellus right now as my Lampi GG dac does not have an extra set of analog outputs to use.
the Entreq Poseidon sits behind my amps and the outside boxes are each hooked up to 'L' and 'R' negative speaker terminal posts on my dart monos. my dart mono blocks use the Cardas posts so I cannot use the Everest there.
the middle box on the Poseidon is hooked up to both the chassis of the bass amps in my MM7 bass towers.
the 5 Everest caps will go on the 2 posts on the Silver Tellus and the 3 on the Poseidon. if I get a different dac with spare analog outputs I will add 2 more Everest's.
if I did add a second Tripoint Troy it would likely go on the mono block chassis.