... The second phenomenon I believe to be part of the analog output stage. MArv and I have noticed and commented on this sort of greyness before as a Mosfet mist. In this case, Jfets. BJTs have often sounded clearer and blacker IME, but it seems they would be much more difficult to work with in this application and at this price point.
Believe me, you aren't the first to talk about developing a tube output stage for the Yggy.
The yggy is.said to have a "transparent buffer" stage, and its dac output is such that is needs no amplification...
So I assume a tube buffer stage would have been superior to the Jfet buffer stage..
Also, I assume this "buffer" stage must be well controlled in the yggy, but also, being SS,
Is still alot cheaper, reliable and more cost effective than other solutions...
I am tending to like a passive component solution which is whole lot easier, but also much more expensive,
That in implementing instead large Quality coupling capacitors for the outputs...
I think Im turning into a cap head.
They made huge improments to my projects (amp).
Using different types and learning how to choose in right place for sonic benifits was fun.
Updated my OP (post 2) with a few criticisms. All I can find atm.
Nooo, I dont wanna be a "bad guy"!
Lol
I forgot to mention that the Lampy4 more "euphoric" closer mids, although very enjoyable,
clearly was a not the truth of the recording,
because the audience applause was not as focused as it was on the yggy, which placed the singer a bit further into the stage.
The sonic image seemed just as real on the Lampy(being a bit closer),
But you could still tell the yggy was the more sonically accurate.
Overall playback the song dynamics was a bit more expanded on the Lampy, like using a expansion device, (like "DBX" if anyone recalls that).
So I would say the "voicing" of that dac was not true to the source, yet, again, it was very highly musically involving,
Which is the main reason why anyone would chose another dac instead of yggy.
I personally would normally rather choose a more truthfull dac over a more euphoric dac,
if they both had same level of detailing,
I could always add that euphoric sense down the line in my amp,
with a swap of more romantic tubes...