Well the Freya+ is certainly an upgrade over the OG Saga, no doubt about that! I've only had it a couple of days, but even out of the box it's more dynamic with a bigger soundstage and seemingly better detail.
This is my first go at a tube based pre, the Saga had one tube as a buffer only. When I first got it the jfet buffer mode was a little quieter than the volume pot only mode. But on day two the db difference between the two disappeared, and I suspect as it burns in things will improve further.
The tubes were also making some slight noise with no music playing occasionally. I powered down and removed them, and found I hadn't inserted them fully. I also used some deoxit on the pins just in case. Upon full insert they've been dead silent since. And what a jaw dropping SQ. It's a new level of "in the room live performance" for me.
I can see why they keep selling out on the Schiit page.