You are right , you never accused any subjectivist audiophiles of placebo effect in the posts i read from you ...As do most objectivist audio tech ...But double blindtest is precisely a means to eliminate placebo effect or any other biases ...😁
But for the rest my description correspond to your opinion it seems ...
Transparency for me is not only a notion associated with gear design ( distortions or not) but also a notion associated with the room translation of the acoustic perceived information coming from the recording ...The gear design is a factor at play for sure , with or without pleasant or disruptive distortions, but for me acoustics as with the BACCH filters or the room /speakers/ears relation as in room acoustic play a great part in the information retrieval and the more transparent possible acoustic translation ...
Simply said we can imagine that the best amplifier will or must or may disapear and will only convey transparently the acoustic recorded information, but in stereo system we need more, we need the room acoustic positive addition and contribution and we even need the BACCH filters as you already know yourself owning them ...
In one sentence : we cannot exclude acoustics experience and concepts from the definition of "transparency" and limited the experience of transparency to mere gear design ... Than using blindtest and only gear supposed to be distortionless as wished by some, is not enough to understand "transparency" as an acoustic experience ... Because the recorded information must be retrieved and convey for some specific ears and specific head in specific room ...
I am not an expert for sure ... This is only my opinion ...
The interpretation is not an accurate account of my beliefs. So I guess I should make myself more clear at this point. Transparency in audio is an utter lack of any *audible* distortions between a component’s input and output. ABX DBTs are an effective way of determining real audible differences. I have never made any reference to a placebo effect.