I have a Standel Studio Bass (IIRC)....2 15 combo,
sort of resembles the black slab from 2001,A Space Odyssey .
It sounds good , lots of overhead, very heavy !!
It's not hi-fi like my F-1X/SF-2 rig , but it does have a nice overall vibe to it.
The circuit board has lots of tropical fish caps and some of it has epoxy on it to hide the special sauce.
I got mine for $100 about 5 years ago, the early tubed amps are pricey but you should be able to get a deal on the Standel SS gear ( did I mention it's heavy? )
cheers