Do they require phantom power? If so then you can't run them with a CA preamp or the likes. You need a phantom power adapter and/or preamp. I had a similar question in another thread though. I have a phantom supply for my Joe Meeks, but I was wondering if it would be possible to put a SP preamp in line with that if it would boost the mics sensitivity without having to spend more money on a bigger preamp. I doubt it's possible, but you never know.