I'm confused as to where this upgrade is going, left, right, up, down, break-in or break-out ?
Like La45, I'll wait for all the dust to settle, then make a decision.
I'll stick with my original mods, the acrylic top, floating the circuit boards and adding a Furutech gold IEC inlet for the time being.
The AH is already in batting distance of the infamous REF 3, what more could you ask from a 2.5K preamp ?
Now, I have to find some musical, dependable mono amps to get my tunes back up and runnin ........