DPA makes a nice preamp for that series of mics, the MMA6000. it delivers from zero to 35dB of clean gain. You'd have to modify it as well, in order to get it to work as I'd described earlier. In fact, the mod to this one is probably a bit more in-depth. I learned how to do this mod because I was stupid with a dremel tool.
In truth, since it sounds like you're in Canada, you might want to contact a member here, Chris Church, Church Audio. Chris builds custom audio gear, and preamps. He might have a quality solution for you for less than what DPA will run.