I have a used pair of Michael's older Raidho D1s that are probably my last pair of speakers and at their list of around $48k they were terribly expensive but totally world-class and with two puny 4.5" mid-woofers they run tightly into the 30s.
But Lars is a salesman, first and foremost. Cryo treatment may have an audible difference; let's agree not to put it to a blind test, ever. I sense it's a great way to up the price to astronomically high levels with goofy add-ons. This seems to be a true test of what diminishing returns can actually be, even for a great Borresen product.