Yeah, it could be an acoustic bass guitar. I only see two tuners on one side of the head... it's possible a third one disappears against the dark background, but they're spaced very widely if it's a six string.
Not sure how old the pic is but electronics are very common in acoustic guitars and that's not particularly new. I have a 35 year old Taylor guitar with a built in pickup. Taylor in particular, you can probably get most if not all models without a built in pickup, but you'd probably have to order it, I'm not sure I've ever seen a Taylor guitar without one.
I'd almost bet ALL of sstrams guitars have pickups. He may not own an acoustic guitar... but he might.
I think everyone needs at least three guitars, an acoustic, an electric, and a bass. Then, you start building "depth".
Aries
~Sign of the Rams