Bill,
Looks like you've got all the cool caps, bybees, outboard fully polypropylene power supply, Intact Audio/Bent's autoformers etc...but care to expand a little on the circuit? Looks like it is transformer coupled at input and output, and it must be a differential/balanced circuit as well. How did you arrive with the 12AU7 tube choice given the plethora of even lower distortion tubes out there? And why not DHT especially at the $25K price point?
I'm just curious that's all...
Anand.