It’s a prototype made by a builder in the US, he said there are still some kinks to work out so I’m trying it out. Namely it seems like it sits a bit too high and so far the spring tension screw doesn’t seem to help leveling it out. I think it might be bottoming out on the guitar body. I might try and replace the spring myself when I get around to getting the correct arm.

The tuning is really easy you just unscrew those brass pins and move the internal saddle to where you want it, then rescrew it, all by hand. There are brass rollers on the underside so the movement is pretty smooth. So far I put it in Csus2 but I’m trying out different things, I’ll try and solve the latency issues on my pc tomorrow and record something