Thanks for the good word. There's no update on any cimbassos from Kanstul just yet. And no, I haven't gotten my own model 90 CC. But I will.
I played the F tuba last night. It's incredible. And this is just the first test model. They've got a few things to adjust, but this is one of the great F tubas. If you like a smaller piston F like the Petruschka or the YFB621, you'll love this Kanstul. What you really want to know: Yes, the low C is awesome. Here are some pics of Anthony Parnther and Tony Mazzaferro playing it at the Kanstul factory:
There are a few minor things to adjust: shape of one of the back side branches, a few slide lengths, add gold brass bell, and the 4th piston will get tucked underneath the 3rd a bit more. Otherwise, it's about ready to go. No price is set yet. Note that all slides are accessible from the top. From left to right is 5th, 1st, 2nd, 4th, and the 3rd is behind the 4th.
Here's a pic from Anthony Parnther's Facebook page of most everyone who attended the late night gathering and tried the new tuba:
L to R: Anthony R. Parnther, Stan Freese, Tony Mazzaferro, Stan Freese, Zig Kanstul, John Van Houten, Troy Emmons, Robert Carpenter, Steve Ferguson, (not shown: Justin Jerome)
Best,
Ferguson