Interesting, thanks, I will do a lookup. THere are 2 bart preamps as well as these two boards. One is a single PCB with 2 sets of dip switches on it.
No, tell a lie, there are 2 probably bart preamps, another potted box, presumably a preamp, a single PCB that is printed with dip switches on and an jfet op amp (LF442) on the other side, and a single PCB on a bit of veroboard with what looks like a TL061 amp.
Very unlikely i can do that - I go to london maybe once every 2 or 3 years, and when I do I don't really have the option to lug a 5kg bass (with no case or bag) around with me!
It does indeed