Optimum MM cartridge loading

I see that most phono preamps do not have an adjustment for 100K load, which is what some MM cartridges like (such as the Grace F9). I only see 47K on the phono preamps I have looked at. Also being able to set the capacitance would be helpful, at either 100 or 150pF. Are there any "affordable" phono preamps that have these adjustments built-in? If not, how can I go about adding the desired loading and capacitance to an existing phono preamp? My Musical Fidelity X-LPSv3 has neither of these adjustments on it. I am open to replacing it with a unit that provides adjustments.