My father was an electrical engineer, so I was fortunate enough to have the use of all kinds of tube gear he built. When he realized I was actually serious about playing bass, he gave me a 30 watt tube integrated amp he built (for the home Hi Fi) and a Klipsch folded horn cabinet with a 12" Radio Shack speaker. The amp was in 2 parts: the amplifier section and the power supply - just 2 metal boxes with tubes and transformers sticking out. It actually sounded pretty good and was reliable..
Of course, since I had to have a "real" bass amp, I saved-up and purchased a Vox Kensington.
Since then, I've run though a bunch of stuff and, like many of you TBers, have collected and kept a few different things, but switch between a Polytone Mini Brute (for ease) or Euphonic IAMP800/Epi 2xT-112's.