Showed up this week in good condition, a little teardown, then:
Very easy to tear down, you undo two screws on the top and the side of the unit folds off and pulls away - beyond that, you've gotta start pulling parts because it's packed in behind a bunch of things.
No fans involved, just two large heatsinks, one has two mosfets and a thermal switch, the frontmost one has just one mosfet and a thermal switch.
Doesn't appear to have any regulation of the high voltage, just a switcher of some sort, only linear regulators I could find were the top front section which are just powering the electronics on the front panel.
A pair of nice sounding relays click away when turning up the voltage.
Looks like the input voltage switching is done by changing connectors on the back of the input board rather than a differently wound transformer, which is handy.
Output reads fine with no significant AC voltage with a multimeter (the meter reads about half a volt high, but the front panel shows no decimals), don't have a proper high voltage probe to scope it and see and haven't done load testing, but it looks clean and I doubt Kikusui is going to be fudging their output specifications.