Interesting bass - 4 output jacks though? Do you get to plug it into 4 different amps? Maybe a good excuse to “need” some more bass amps! 
Interesting video. At 3:45 you can see the electronics. It looks like 1 pickup per string with each going to it’s own pot and jack. Or it could just be for looks like the metal fins.
Having said that, I want an amp for each of my strings. Just to have the chance to learn how to EQ all of it together. That would be all kinds of fun. 
Haha, can you imagine?! What fun, and, with each amp having its own sound, the whole thing could somehow be “your sound” - but, the downside would be, it might just have to be a home setup, as lugging 4 bass amps around would get old really fast!
No way. The other musicians in your band would appreciate your sound so much they would help you carry it all…
Yeah, that can’t be right. I can’t imagine that happening either.
I don’t know what the idea behind the fins is unless it is just for show. Seems a lot of work if that is the case
It’s cool, get an octaver with octave up and two would be guitar amps 
um 1/2 steam punk 1/2 cyber i dunno man
I found out what the fins are for.
This is part of the new marble machine and the fins guide the marbles onto the strings
That’s really cool. It also explains why he used separate pickups for each string.
wow that is engineering at it finest
This might be the final video in the series - amazing engineering!!
His work is amazing.
Haha! And he even played the Bach cello suite there with it too (around 12:00).
It is an engineering marvel for sure. Though probably not exactly the kind of thing you’d want to lug around to gigs!