On power conditioners, I’ve been intrigued by balanced power conditioners and was impressed with what I read about Core Power Technologies products prior to them being bought by Underwood Hifi. Their Equi=Core 1800 Mk3 sells for $1799 and comes with a $400 upgraded power cord. I don’t know how it compares to the Niagara, which I’ve also read great things about, but there are reviews of the 1800 out there that might be worth a read. Anyway, just thought this might give you another interesting option to consider FWIW…
https://www.underwoodhifi.com/products/equicore
Looking forward to your thoughts on the AZs BTW. 🤞🤞🤞