Btw, I was trying to sell my LCD 2 recently and a potential buyer came to listen to it at my house. He brought a Hugo Chord DAC/amp which cost north of $1000 and it definitely sounded better with the LCD 2 than the O2/ODAC. I didn't do a blind test but I felt there was a big difference. The O2/ODAC is the most expensive setup I had ever tried till that point and I was quite skeptical about the benefits of expensive setups based on what I've read on the sound science part of town till trying the Hugo Chord.
I honestly don't believe it was expectation bias or anything psychological.