He had a Linear Tube Audio integrated and their streamer. Clayton admitted the sound was a little thin with these components. I thought the highs were slightly brittle, which I attribute to the LTA stuff. I have become very sensitive to edgy mids and highs, so have never been a fan for those reasons.
On the plus side imaging was excellent; bass and mid bass were articulate, clean, and powerful; midrange was seamless. Boogie factor really was there. Unless you listen to a lot of pipe organ you won't need a subwoofer.
Regarding the negatives, I know determining the cause is a bit of a crap shoot. But what I heard fit with my previous impressions of the LTA gear. A few years ago I had a pair of Spatial X5s, so I have a pretty good idea of what Clayton thinks sounds good.
Hope this helps. Specific concerns?