What cartridge for MMF-7?

Sage advice. Thanks, and I will look into those phono stages. The good thing about the Sumiko, I believe, is that its usable for both MM and MC. I have been on the DIY room treatment kick for awhile, measuring spl's and moving things and constructing bass traps. Any advice for curing a 6-7dB jump for the 40hz and 50hz warble tones?

About your frequency response hump at 40-50Hz, that is probably a room interaction. It may depend on where you are standing when you take the measurement. It may be quite different in different spots in the room. If you are doing it at your chair, you may even consider a change in chair position, or a change in speaker position. Sometimes getting the speakers off the floor onto a low stand with an open front can smooth out a bass hump a little. It may even be inherent in your speakers. That is not unusual.

Tom,

Would you recommend a low output MC cartridge for the Project 9 arm and is there a tube phono stage that does a really good job with both MM and MC? I am scouting an upgrade path and it would be nice to get the phono stage now and latter upgrade to the low output MC cartridge with a step up transformer to boost gain if needed. Another idea I had is to upgrade the arm to something based on the Rega arms, such as the Origin Live line. Sure the arm would be worth as much as the table, but that arm could also be used when I upgrade the table in the future.

Sure you could do that on the Project 9. Try a Denon Dl103R or a Ortofon X5-MC. An EAR 834P is a good tube phono stage at a reasonable price.