If using digital riaa one might well use a (really good) mic preamp from studio world.
The Mutech RM Kanda Hyabusa
Anyone out there have this cartridge? Very intriguing design ala Transfiguration. Impedance is 1.5 ohms, Output 0.45mV, Compliance is not listed. $4500 and you get a two week trial period. Neat. http://mockingbirddistribution.com/mutech-cartridges/