Well, as it goes I had tracked them for many years, even before the ease of Internet browsing. Foreign mags, dealer networks, etc. once the 'net became more complete, I took to that. Nothing. And I mean for years. Then a pair in the mid 2000s, but one had totally different transistors in one of e pair. The gentleman tried to make it as a plus, but I prefer original, or to at least know he person who did the work. They were on auction on audiogon and ended somewhere over 16k and that didn't meet the reserve. Dodged that bullet for a non original pair. So now I am realizing there are only a few pair of them arond at all, dang it was looking bleak, maybe they'd be something of desire and memory only.
Then in '13 I was a pair for sale as-is in Canada with a channel down. They were 240v but every one of the X2's made were multi voltage, under the top cover there is a 4 way adjustable power block like the older Accuphase amps used to have, so no problem there I thought. I waited for a while before making an offer, and it was accepted. I got them and sent them right off for repair. Tech one, no deal because there was no service manual available anywhere. 13 months and I found another tech in CT, and as luck would have it a gentleman in Denmark had copies of the service and owners manual, which he sent free(!). No go with this tech either, too worried about sourcing parts for a unit that was outside of his norm. 3rd tech, random recommendation from a new hifi friend, he does all high end machines and has a load of parts connections around the world. This was 2 months ago, and they're done minus a 240v breaker switch on the back, which I just helped find a replacement for.
The issue was a pair of diodes soldered in reverse polarity. Took out stuff before the amp clamped, it's protection circuitry didn't include an ultimate stupidity line.
Anyway, he sourced all exact replacement parts for the one, and has replaced some caps and the 9 or 12 bias control "switches" as he calls them in the other. The plan is to get them back tomorrow. Now to try to find a guy to remove and re-anodize the faceplates. The R. Edge of both suffered some odd scratching somewhere in their life.