add-on outboard RIAA equalization units?

I have a superb sounding Simaudio LP 5.3 phono stage, but I have a fair amount of classical European pressings that have a frequency balance that is tilted up due to a different RIAA curve used in Europe. Is there an outboard RIAA equalization unit that would make available more RIAA curves that could be switched in and out as necessary?

Thanks, Dan
Would be useful for bright sounding Columbia 6-eyes also, which also used their own curve.