I've been looking at reviews and demos of the Sunn Solarus, and, in short, I want.

But, alas, I can't find one anywhere. Not even Ebay.

I know that Sunn don't make amps any more, and that Fender own them now. What would be the current day alternative to the sound of that amp? Preferably with the 2 groove tubes the Solarus had, and in head form. But not necessarily.
Any help would be much appreciated