@bkeske Good to hear the 5814A worked. As I mentioned, I find the CV400x to be a bit too warm so these are going to seem like a breath of fresh air!
It’s interesting as I never considered replacing the Brimar’s after installing them, as they are quite popular and were highly recommended. So, I somewhat ignored the au7’s and concentrated on the ax7’s instead. This was a nice change, but now wonder what an Amperex, Mullard, or Telefunken, etc. might bring to the table. But, for the time being, I’ll enjoy these. Seem like a bargain to me.