Vandersteen, DNA & SMcAudio (AKA "Mod Squad")

Just had an "interesting" conversation with SMCAudio (04/10/18).

I had just picked up a pair of cloth Quatros the end of 2017, and picked up DNA 0.5 for those Quatro a couple weeks ago (mid/late March 2018). I had the seller send the amp directly to SMcAudio for the full "Gold" upgrade (+ Balanced inputs, +additional Cardas Binding Posts for bi-wiring). 

What was interesting about the conversation was, without seeing, or conversation with anyone else, I thought I had imagined all on my own, adding a switchable "high-pass filter" for the Quatro's into the amp. During that conversation, I was told that my amp was one of three currently in there for upgrade, of which all three were going to be used on Vandersteen Treo's, Quatros, or Model 5's. Even more interesting, I was told that all three customers had requested the same type "high-pass filter" upgrade for their Vandersteen speakers.

There seems to be a belief that upgraded DNA's are a good match with Vandersteen speakers.... I did this mostly blind. Is there a consensus out here, or is there one just now forming?