Choosing the right SUT for my setup

There is a lot of misleading nuisance being written here against the use of SUT. Utterly incorrect. Unfortunately the OP seems like a newbie and he will take away a very distorted confused view about this whole SUT game.

To the OP, a good SUT like a Denon AU-340 will beat the MC section of many/most $10k phonostage but you have to get the right match for your cartridge. For your carts you need a 1:20 SUT to sound tonally correct, with proper gain. If you go for 1:10 like the ones in AU-320/300/340 it will sound too bright and also lack gain. There are ways to match the impedance by adding a resistor but it is a dirty route especially for you as a starter into SUT. So here are couple of options

1. Get a 1:20 Cinemag Blue SUT and it get it installed in a nice box with termination. Bob's devices is a company which sells this SUT for Sky (pun intended) high prices just by installing it into a good box. The SUTs are already built into a mu-metal can so any good box would do.

2. Get a nice multi-tap SUT like Ortofon T-30. It has 4 gains for different impedances including one for 12 ohms.

SUTs can get very expensive. If you want to spend more, there are options like EAR MC4

@jctyler among all this discussion, do remember 2 things

1. A good MM stage is paramount if you want good sound. No matter how good is your cart and SUT, the quality of the MM stage will have the highest impact on sound.

2. A good MM stage is expensive. Nearly as expensive as a similarly capable full function MM/MC phono. In fact that is where the bulk of the design and money goes in a phono stage. So it is an expensive affair to dwell into SUT + MM phono.

Moreover choices for pure MM stages are very few in the market.

I don't know which MM phonostage is agnostic to loading. Can you name a few @dover ?