@testrun Did you get the upgrade in your unit? I was planning to do that but they do not allow returns if upgraded. The only reason I might return the unit is as follows.
My main concern is that this is a high gain preamp. The Bricasti, I believe, has a rather hot output (their output specs are not in volts and are confusing to me), the Voyager is powerful (350W), and the speakers are 91db sensitive. I am concerned that I will have a very limited volume range available to me. Like from 0-10 on a scale of 0-100. Your amps are 85W and your speakers are, I believe, 85db sensitive. So in that regard we are very different.
You can ignore my questions about tubes and cables, above. I think I have a handle on those.