Absolutely makes sense. There a longer term listening aspect to these things. Sometimes gear that wows and impresses upon first listen gets tiring and annoying after repeated listens. Sometimes we don't get the understated aspects of sublime awesomeness... until we go back to something less. With more experience, listening to a lot of different gear, we can learn to filter out the initial "wow" effect and easier identify the more subtle qualities of gear. More on this in the last paragraph below.
Haha! I thought my setup was a bit too warm! At least from Saturday to Sunday afternoon with the Psvane WE275 tubes. It's hard to say. The Theta Gen V is warmer and was used Saturday morning. The Yggy sounded lean on Saturday and got warmer sounding Sunday afternoon. When this started happening, I switched to brighter sounding but more resolving vintage Sylvania and Hytron 2A3s. My setup was brightest sounding right around this change around Sunday noon or a little bit after. The tubes need a little bit of time (15 minutes to an hour) to not sound brittle. I felt the setup sounded best around 5:00pm on Sunday before the show was over. Yeah, I'm that OCD. And yes, tubes warm up quicker than solid-state stuff.
Schiit had their Yggy on about the same time, a little bit earlier actually. I was running v0.99, Schiit was running v1.00. There is some suspicion that v1.00 warms up quicker. (This is not worth exploring because the recommendation is just to leave the darn thing on and 1.00 will be the production version anyways.) Jason and I actually talked about doing crazy stuff like in hauling the Yggy plugged into a power inverter attached to a car battery.
I'll go out a limb here and note one very very crucial thing: no one, I repeat no one, at the meet, including myself heard what the Yggy could really do. Maybe hints and spurts here and there. 48-50 hours is just getting started. After 90-120 hours and something really incredible happens. It's subtle, you press play, sounds good as usual, bob your head, and suddenly, it hits you, you realize... OMG. What. Tears of joy or piss on the floor.
It's my sincere wish you guys your get Yggys soon and experience this. (BTW, I don't currently have an Yggy, I'm waiting in line like the rest of you guys. As I've said, it was made very clear that the unit provided for me was a loaner and could be taken back at any time.)