I use a Macrus Retro on my MM4.
Absolutely great and versatile preamp!!!
The sweepable mid and "pull for bright" are just fab!!!
John East U-Retro 5 Knob Delux should fit your config requirement. If not, you may always talk to the man himdelf via email and over the phone, swift response and a very friendly man! As I understand he also does custom/ tailor made premaps and config, too.
http://www.j-retro.co.uk/
I have not affiliation with this company and I am just very happy customer!