In 1969 in a huge basement up on Federal Hill in Providence, Rhode Island, I recall hearing a 412 or 612 Traynor bass cab and head that really was quite impressive. At the time I had a Dual Showman that just was not cutting it, as much as I liked it.
I think it was a BassMaster I or II, I don't recall which. IMHO, a fully working and restored version would be cool. However, I have totally moved on from pseudo-legendary "farts squeezed out of tubes into flabby drivers arrayed in huge flimsy cabs" era.