That test was amazing. You made me really excited and I even guessed the first one correctly by seemingly hearing the difference. So I spent minutes on each of the other questions, listening and listening, but I just couldn't hear it and sure enough I guessed wrong on every other question after that.

And I have a mid-range mini amp that fits in between my books, and two mid-range dali speakers hooked up with a regular 3.5mm outlet to my Ryzen MSI PC board, volume up to max on the computer but not on the amp.