Tommy,
I recently received back my Custom Audio Note Kits L3 from Bill with among many upgrades, the addtion of balanced inputs and a second set of balanced outputs.
My 2 box unit incorporates many of the design features of Bill's Perfetto, but does differ somewhat.
What I can tell you is that, in a fully balanced system (dCS Scarlatti DAC upstream and Atma-Sphere MA-1s downstream), Bill's balanced design upgraded preamp is the centerpiece of my system, making beautiful music.
I agree with you that the wood cabinetry of Bill's own line puts the look of my Audio Note to shame. Fortunately, my 2 channel system is in a dark home theater "man cave"!