No offense, but not everything can be explain scientifically (god ,love Bobby Fischer and so on). I really love this forum, and I have learned quite a lot here, but when it comes to tube,R2R and i2s I have notice that the measurement are not telling the all story. I don't know if one day we will able to explain why, but on many devices that where measured to be lesser than other I heard differently, and so many others. in a blind test I can tell the difference. and in many cases it sounded spectacular. so instead of fighting and being cynical. maybe we could try to join forces to understand why so many people can here something that measurements don't.
P.S - I was diagnosed to have an absolute pitch when i was 9, so wouldn't you say that the hearing test is somewhat scientific, no?