It's the Eastwood Warren Ellis Mandocello (https://eastwoodguitars.com/collections ... mandocello). Narrow neck, 4 courses of strings tuned in fifths, starting at a low C. The bottom two courses have octave tuning, the top two unison. Mustang shaped alder body. Single coil neck pickup, humbucking bridge pickup.
When I did searches for mandocellos online, I found a bunch of YouTube videos of dudes playing the 1st Bach cello suite in G major. The Eastwood mandocello can certainly do that. Personally, I treat it as a cross between a 12-string guitar, a stoner rock machine, and an alt tuned Jazzmaster/Jaguar. It can sound more like the Electric XII on the third Velvet Underground album (and the Matrix Tapes live VU) than my actual Electric XII. Run it through a Russian Big Muff, and it sounds like Sonic Youth or My Bloody Valentine. Play 5ths on the lowest strings and dig into the finger vibrato, and it sounds like Sleep or Sabbath other doomy bands tuned down to C. With all of those sounds, you have that parallel fifths tuning, which means that the chords are going to sound very different from most music out there, unless you were using Fripp's New Standard Tuning. The unison and octave tuning adds fullness and beating all over the place. It's really an incredible instrument.
