I remember scouring eBay since the mid-2000s trying to buy a VHT d60/d120 Mark I head.
Back then, the VHT website had excellent sound samples played on various guitars,
and I used to visit daily just to listen to those samples.
After a couple of failed eBay bids, I never actually got to own one.
Then, around 2013, I went to a gig where another heavy metal guitarist brought his D60 Mark 1, and all the bands performing that day, including mine, ended up sharing it.
(I later had the chance to perform with that band twice more,
so I got to use it again.)
A few years ago, when Paul Bradshaw did content matching Fractal's D60 modeling to his actual d60 amps,
I watched with interest.
I downloaded his matched presets, adjusted them to my taste and old memories, and recorded some samples.
I remember using "Cliff's AITR tip (without cab block)" created with filter and geq,
as I wasn't satisfied with some of the IRs I had tried matching.
I believe this approach allowed me to get closer to the character of the D60 amp I remembered.