any more details on various dacs you tried when deciding on a yggdrasil and the differences you found would be great to read (the yggdrasil was high on my list but i opted for the rockna due to a rec from a friend who's ears and taste are similar to mine)
Let me report on some differences between the DACs that I have owned in more recent times:
Wadia 12 (from 1994 with opamp mod 1997, but owned until 2013)
Berkeley Alpha DAC 2
Yggdrasil
As far as natural sound and digital edge goes, this is best exemplified on orchestral massed violins. The Wadia 12 was not very detailed, and the silky sheen on the violin sound was absent. The Berkeley was much more detailed, and for the first time I heard silky sheen on violin sound from a DAC, thus a much more natural sound, and there was less glassy hardness. Yet the Yggy portrays an even more natural and finely resolved sound of massed violins, with even less glassy hardness and harshness, especially on fortissimo passages where the Berkeley still sometimes had a tougher time. And most recently, the violin sound has further improved quite substantially with the ceiling diffusers, which eliminate distorting reflections in my room.
The difference in naturalness of sound between the Berkeley and the Yggy is also evident in the timbral palette. Trumpet and solo violin can sound with more body on the Yggy, yet at the same time the high register of trumpet can also sound more piercing and brighter on the Yggy, more in line with live sound. High registered massed violins also sound brighter on the Yggy, whereas the Berkeley is too midrange-y on this material. On the other hand, flute usually sounds darker on the Yggy, also more in line with the real sound of the instrument.
Rhythm & timing took a huge leap forward between the Wadia 12 and the Berkeley; the latter was the very first DAC that I heard that could truly
rock (the Wadia was quite good on jazz, even though also there the Berkeley was better). But as good as the Berkeley was, the Yggy is even better on rhythm & timing, a true rhythmic animal -- I haven't yet heard better rhythm from a turntable.
Do I think the Yggy is perfect? No. It might have even more body and weight of sound, for example, even though it is quite good in this area. It is also better on body from lower midrange to mid-bass than, for example, the dCS Vivaldi; the latter has better deep bass (I have heard numerous direct comparisons between Yggy and Vivaldi in a friend's system).