MM and Linn Linto?

I'm thinking of upgrading my Audio Research SP9 Mk III to separate line and phono stages. My phono set-up is a recently purchased used LP12/Valhalla/Basik Plus with an Adikt cartridge (with long term plans to upgrade table, arm and cartridge). I've had the chance to audition the Audio Research PH3 SE in my system, and was very impressed, and it worked fine with a MM cartridge, with the flexibility to move into MCs in the future. I've read that the Linn Linto is a terrific match for Linn cartridges, but do I understand correctly that it will ONLY work with MC cartridges? What happens if it's hooked to a MM? Excessive gain, or more dire sonic consequences?