Dear @karl_desch Your XP27 is very good design and something that made the differences on what you listened vs the SUT came for the XP27 bass range that not only gives you that depth in soundstage.
I think no SUT can touch the overall bass range management by a good active high gain SS design and one with the niquel core less.
I read this comments from a XP27 owner:
" XP27:
1. Lower noise
2. Lower distortion
3. Deeper bass, more articulate bass, less fat, more impact/punch
4. Better transient attack, fine, more precise leading edge
5. Cleaner, clearer sound, more resolution
6. Deeper stage, better hall information
7. dynamic, explosive
After dinner, I played the Sheffield Drum Track. Wow. It was explosive and loud with very little distortion. There was incredible nuance between the different types of drums and it had huge impact and dynamics. The different drum characteristics and his technique has never been more discernible.
I am still listening with the Burley Wire IC because it sounds so good, but I plan to send my Transparent Audio cable back for recalibration to see if it will sound even better. The XP-27 has continued to improve over time. It seems that the complete break in period was about ten days. I have now had it in my system for sixteen days, powered on the whole time.
Since Al heard it on the fifth day, the resolution has continued to improve. Low level information is even more clear. Micro and macro dynamics are better. The soundstage is about the same, but the depth has increased. Presence, an attribute of my system about which I am very pleased, is even more pronounced. I have not heard this level of 3-D palpability before. Timbral accuracy has never sounded more real in my system. The overall impression is one of improved clarity and a more natural sound. Everything just sounds more real to me. """"
Btw, could be interesting that your friends can ask to EMIA its measured FR due that even that exist audiophiles that just do not care about that kind of measure is really of critical importance and the manufacturer just " dead silence about " and I wonder why because other SUT manufacturers gives that kind of measure.
R.