I'm new to Step Up Transformers

My mistake - I definitely have the PS-1.  The setting I settled on was 200 ohm I believe.   

  Thanks for all the responses -  it's great to have access to all the experience out there. 

    My Zestos does have a MC section - it has settings for Low Gain or High Gain. 

My confusion was because a friend with the same phono preamp as mine was telling me a SUT would improve the sound. And others online were saying similar things. 

Great info and advice!  Thanks so much.  

  My vinyl setup is a VPI Scoutmaster II table with a Soundsmith Paua MkII cart. 

I had a MM cart before so this is the first time I've used the Low Gain MC circuit in my Zestos. 

Yes, it's a moving iron but a very low output, similar to a low output Moving Coil. 

The Zestos model I have is the PS-1 (bottom photo).  I did experiment when I got the cart (2 weeks ago) and found 1000 ohms to be too bright and thin. 

   I believe I ended up at 800 ohms (at least for now) and that setting gave a nice airy high end without it getting thin. 

    Lower settings started getting too dark or dull.  But I am told that carts have a break in period so all that could change.

I did not try the lower of the gain settings on the MC channel because I assumed that it would be too low.  But I guess it's as easy as flicking a switch to see what happens.  

  I should have thought of that. Duhhh

Thanks so much Atmasphere. The Zestos has Jensens (I'm told) in the MC channels. That's great info about SUTs. 

My Zestos offers only 2 load settings that are in the range to suit the Paua (minimum recommended setting of 470 ohms):  400 or 1000 ohms.  I have set it at 1000 at the moment but it requires more listening. 

Thanks for this very educational discussion!