More time with the Hugo and some comparison with what I heard and what I had - especially addressing the bright sounding of the vocal or the upper range.
I believe AL was the one who first stated the bright vocal sounding of the hugo, and I believe he has some DACs costing a lot more than the Hugo - one of which is the Lampi big 7 and I believe he has made a point it is a better desktop DAC. I had a chance to listen to that, as well as made comparison with other DACs, the Oppo 105, and NAD M51. Also a few others friends bring over to test previously.
To put it simply, the Hugo's vocal is not bright, the word I would use is that it is more forward compared to the tube DAC Lampi B7. It sounds like the singer is closer to you, but not sharper in tone. Comparing the Hugo with other DACs (Oppo 105, NAD M51, and a burr brown), the vocal is comparable in terms of position.
Is the Lampi B7 better in that regard? I believe so - the vocal is staged a little more relaxed and gave a more musical sense and less fatiguing (note: LESS fatiguing not suggesting Hugo is fatiguing to listen to.) The magic is the voices are just as clear as the Hugo - the Lamp has a rare talent to have the vocals relaxed yet crystal clear.
However the Lampi is not an all out winner to me - I listen to it with all kinds of music, and one characteristic really stood out on the Lampi: the base and dynamic impact is quite recessed, compared to all other DACs. I would call it an n shape (or inverted U) but without the high frequency taking a hit. Just the bottom part. For some genie with such a musical vocal presentation and details the Lampi is magical and hard to forget. However with some other music you won't be tapping your foot like you do with the Hugo. There are other things the Lampi is a little better, such as the sound of piano, I haven't heard anything so good. I'll leave that to another thread.
Now the good part of the Hugo - it really brings out details like no other DACs. A pair of good headphones would be immediately apparent. Instruments are distinctive, yet it is not analytical. It is this layers of music that make this DAC standout and distinctive. I'm listening to all my old favorites like new.
I'm lucky where I live I can bring the Hugo to demo virtually all the best headphones of most brands side by side. The Hugo has adequate power to drive most but with some a headphone amp seems to add much more life to it. With easy to drive headphones like the TH900 the Hugo is just awesome by itself, truly a great match together that is hard to put down. Once you put down you can't forget the sound and wants to go back to it. As for external amp I'll have more comments once I investigate further, my plan is to compare the Bakoon, HVD800 with HE6 and HD800 in the future.
Enjoy!