Not sure about any amp makers, but some of the boutique guitar makers will be.
I truly believe that we are living in the second Golden Age of guitar. (the first obviously being the 50s) The level of lutherie that we are seeing today is unprecedented. In the past we have had Fender, Gibson, and to a much lesser extent Gretsch. Then came Hamer (yes they were *way* before PRS. Hamer pioneered the boutique guitar market) and after that PRS.
Now, there are a multitude of builders who are making absolutely impeccable instruments. I credit the internet for most of this. Luthiers like this have always existed but were limited in how many people they could attract. The refinement of CNC has also had a *huge* impact on the boutique market.