I'm very impressed by Sanken products.
The C0-100K is awfully good as in the CU-44x. That entire 2 capsule, one for bass and one for the rest is fascinating.
Very lo fi comment coming:
It sounds intimate and expensive.
Those two mics on acoustic guitar and vox alone. Very special.
It's a very different sonic direction. Yes clean.... But there is a footprint there that I really like. I don't own either one but they are on the list.
There are some snic characteristics that are so very pleasing in an honest way that just makes me smile.
I could put both of these mics in front of James Taylor for vox and gtr and maybe add a AEA44 for thump on guitar.
Very nice picrophones.