I'm not connecting with your statement about vocals not being placed forward enough. What I would be interested in, is how far forward/backward the sound field goes based on the recording. Some recordings have the drums placed far forward of the singer or main instrument, some have backing vocals behind everything else, sometimes the vocal is forward etc. Can you give an example of a recording you used?
Tom Jones ‘Did Trouble Me’ would be a prime example, it has always sounded very upfront, with the Audionote, it sounded like he was more in a recording booth, not in my room.
Now, not saying that is bad, just not my preference. I was told this is what analog sounds like. In fact, a lot of the music sounded like it was coming from a stage deep in my room, so big orchestral music did sound good.
Clearly there are fans who love it, and why not, just not for me.
Input impedance is 11K ohms on the Moon amp, so maybe technical reasons I was not getting the best out of it.