lessloss blackbody

That would seem to be the case here.

Probably only if the Blackbodies are oriented in the same direction though I would think, otherwise the combined effect might be destructive?

Hard to say. Far be it for me to be able to explain how a miracle works.

Using only two lessloss blackbody's

1. At first don't try and hear what you've been missing. It's the opposite!

2. The silence between notes is what was missing.

3. Next I noticed improvement in decay. This is why I said "At first" in point 1 above

Subtile at first I thought but if you listen for an hour then remove them you will be upset!

I have two only two blackbody's; placement is very important in general and apparently you will get the best results if you place the Blackbody facing due North i.e pointing due North through the gear.

My physical constraints are such that I can not get it totally right without more!

Assuming you have your dream gear, room, power, cables, interconnects sorted out this is the final tweak; but after vibration isolation.

btw I was real happy with the lessloss DFPC Signature power cords. Got two then just got 2 more!

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Shunyata Taipan Helix Alpha -> Hydra 8=> 4 * lessloss DFPC Signature =>
Just threw out my dCS P8i, tried a Esoteric P03/D03 and settled for a radically modded OPPO by David Schulte (www.upgradecompany.com) -> BAT REX -> Balanced XLR Valhalla -> Plinius SA Ref -> Valhalla -> Dynaudio Evidence Masters.
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"The silence between notes is what was missing. "

That would seem logical given that it's a black body. Noise must get in but never gets out.

While a certain amount of skepticism is always healthy I would point out that the naysayers here have not even seen one of these things. How do you know that they cannot work?

Quite different from, I tried several out and in my opinion they had no effect or their effect was minimal at best.