Do I need a sut?

I use my Ortofon MC200 with Luxman TYPE-8020 + TYPE-8030 MC transformer connected to JLTi MM phono stage (47k Ohm). The TYPE-8030 silver trans designed for cartridges with 1.5 Ω ~ 3.5 Ω impedance. I do not have a hum problems, but it is not the quitest cartridge and the volume control on my tube amp is a bit higher than with any other cartridges. My phono cables are Zu Audio Mission. 

I think the T-2000 transformer is overpriced on the market, there are many other transformers you can use. Luxman is one of them! 

The T-2000 is not ideal as stated in this Stereophile review:

"Even with Ortofon's own transformer, background hiss was a consideration, though not actually a problem. It was below, but not very much below, the surface-noise level of the quietest disc, and was clearly audible at "normal" listening levels when the arm was on its rest post. Also because of the cartridge's low output, hum proved to be a greater problem that it ever had been with any other cartridge. The effectiveness of the cable shielding and the dress (orientation) of the signal cables is critical with a cartridge like this. When I first tried it, with Ortofon's own step-up transformer, hum was barely but definitely audible behind the musical program during any passages lower than moderately loud."

Read more at https://www.stereophile.com/content/ortofon-mc-2000-mc-phono-cartridge-page-2#omAueWq8yPrE1yJA.99

@jmcgrogan2 

Still, I believe that any SUT is designed to be plugged into MM inputs, though I could be wrong.

ONLY MM (47k Ohm) input, right 

Most MC stages are simply MM stages with SUT’s built into the preamp. So I don’t think you should plug a SUT into another SUT.

No, high gain MC phono stages with 100 ohm input (without transformers) are available from various manufacturers, some of them gives us optional loading, which is great. 

There are MC phono stages available with built-in SUTs too. 

Don't forget about the MC head-amps (pre-preamps) devices that are not passive SUTs, but an active devices designed to be used between the turntable and MM phono stage. One of the very best is ZYX CPP-1 headamp with 125 oHm input for MC. 

Regarding hum this is an issue endemic to SUTs and the T2000 is limited in the facilities it provides to manage this problem. My preferred SUTs from Music First Audio provide a ground lift option (in the case of some of the models including a partial lift via a load) that completely addresses all of the hum issues I have in my current multi-cartridge set up

MFA offer a version of their basic 632 model specifically for the 2000 series with a 1:100 ratio -- cost is $759. Anyway if you do go this way work with Jonathan at MFA and he will build you what you need. I'm sure Bob's can do the same

Anyone know about this one? Fidelity Research  XG-5 moving coil step up transformer with selectable input impedance.
Low - 3 ohm or lower 34dB Mid - 3-18 ohm 26dB High - 18-40 ohm 22dB
I know nothing about Fidelity Research and can't find out any good or bad info on this unit, it's as old as my cart.
Probably a "swing and a miss" but thought I'd ask.

The XG-5 is a pretty re-saleable SUT so if the price is right why not give it a try, you can always resell? The 34dB/3 ohm setting would work

Remember to budget for a quality pair of interconnects (of low capacitance as Al notes)

There's more helpful guidance including specifics on this model here
https://www.vinylengine.com/step-ups-and-mc-cartridges.shtml