Schiit Freya plus. Is this an upgrade?

Not on point but relevant to Schiit. I have the original Freya with upgraded tubes. I’m very pleased with the performance.   I had a small cosmetic issue with the unit. I received two replacement parts and the tool necessary within five days. Says something about their customer support. 

Outstanding customer support. Nice to hear good news from time to time.

Aside from the usage of circlotron which caught my attention( maybe Ralph can chime in), I am also a little confused about no 2 of Ghasley's FAQ cut and paste:
Were there incompatability issues of single ended sources with balanced outputs or vice versa?

If so, I wasn’t aware of it on this forum

I did have to battle a Hum Issue with my Freya at first.Tube shutoff would be a big plus as well.I usually leave My Freya on from Friday Night thru Sunday Evening and make sure I am going thru the Passive or Jfet section.I'm not sure how much faster I will burn thru Tubes but,I am willing to roll the dice to keep the engine warmed up and ready to go to 11 at a moments notice.

@axememan- You mentioned a hum issue "at first". What, if anything, did you do to rectify that issue?