I don't know, but you have some excellent taste in amps!
Thanks. My parents bought me a Sunn Solarus back in about 1968 or 69.
(Amp and 2 X 12 cab new for about $750 if I remember right) I still have it. It needs some speaker repair or replacement, but is otherwise in pretty great condition. I later (about 1975) bought myself a Sunn Concert Bass Amp with a Cab (I think it was 1 X 15, but might have been 2 X 15 I don't really remember). In bleak and dire economic times I had to sell that off. So recently when I decided to start playing bass again and looking for a band for the first time in about twenty years, I replaced the Concert Bass Amp that I had always regretted selling. Then just days afterward the 2000S showed up on E-Bay so I bought that too! I have recently added a 2 X 15 Sunn Cab (200S I think) that I'm still waiting to arrive. I love Sunn and the Sunn sound. Can't be beat, can't be duplicated.