As Chris said, and to make clear, CA-11 = STC-11. Just a new name versus an old name. Same mics.
I've run my CA-11's straight mic in to the R-09 without problems, but mostly run them through the CA-9100 preamp and then line in to the R-09. Very nice low profile set up and I've been very happy with my low profile recordings. I actually have run the rig more in an open taping situation than low profile. Hope that helps with the question you asked.