Placebo effect is one thing....Nocebo effect work too...
If someone decided that some change in his system cannot affect the sound his brain will CONFORM the sensory apparatus and will negate the effect of the change which will not be observed not even registered ...
Then ONLY one thing count for me: change introduced in an incremental process of continuous changes in one direction .... The general tuning direction of my system....
It is called tuning a system/room...
Each step is debatable....The process in his wholeness and complete effect is not....
I used my own homemade devices in the mechanical and the electrical embeddings dimensions and especially my tuning devices in the acoustical dimension...
placebo effect?
Yes for each step separated from all the others in some case certainly there exist a form of placebo effect...
But explaining all my system S.Q. completely transformed AT THE END by only the magic of the placebo is bad science use of a serious concept...
Why not the reverse?
Why all measures obsessed people would not be described by being nocebo bearer ?
I have no idea if Synergistic products works and to which degree but consumers must decide by themselves BY EXPERIMENT...
Myself i need nothing but i will not bash others because they are curious to experiment...
Judging others experience to be delusion is only that : a prejudice worst than what some want to denounce...
The only thing that interest me in this product is what it is made of? ( i created my own " golden plates" years ago who act also like a filter all along my electrical line)
Alas! it is a trade secret i presume...Mine were a composite of shungite ( a carbon based minerals) copper and quartz....
😁😊