I have found that the common suggestions about amps and power conditoners etc. are suggestions not rules. I configure my system and then listen to it. Sounds so basic, but I haven't always done my due diligence. I did listen to my Griffon EVO plugged into my Everest and then alternatively directly into two didicated lines. It sounded better directly from the wall, more present. Three weeks ago I tested the new 30 amp version of the Shunyata Typhon. First using one with both EVO power cords into the same Typhon, then using two Typhons each with the twist lock 30 amp umbilical and my other components plugged into the duplex outlets on the back of the Typhons. This configuration opened up the sound along with other sound improvments that I cannot unhear. The final solution I picked was two Typhons with umbilical cords that are plugged into the Swiss Digital fuse system, then from that box to the amp is an Audioquest Dragon High current power cord into the Amp. This solution is expensive, but has totally changed my sound to one I find grain and harsh free.
The point of my rant is to try as many combinations as you have the patience and resources to try. The engineer types are right most of the time, but the output is what we are after as determined by our own ears.