this is why it is so important to hear stuff for yourself. Although you and a couple of reviewers indicate the Morpheus may have a touch more meat on the bones than the Adagio or Pavane, I have spoken with several others who have indicated they hear very little if any difference between the Morpheus and the Adagio. I have heard from a couple of people, and from Granny's post below, that the Morpheus is thin sounding, and from one industry insider who recommends using a preamp or buffer with either the Morpheus or the two top Metrum DACs.
My personal finding with both the Pavane and Adagio (both of which I have owned) is that they have good tone and detail but need a preamp or buffer to achieve the level of body I enjoy. I am hoping to find something with a similar level of tone, detail, and naturalness, but with a bit more body and weight. It seems the Bricasti M3, Holo May KTE, and Mojo Mystique may provide this and also possibly the Rockna Wavelight and Terminator.
@mitch2
I also own Adagio since 2018 and used to follow your posts. Initially, i also found its sound to be a little dull and thin. Then after a year, I got hold of EAR868 tube amp and now the sound has become more full-bodied and a little more transparent. Maybe you need to consider changing/adding a tube preamp even for a few days to see if there is any change in the sound.
I highly doubt if any other DAC can give you better sound in an almost similar price range.