Is SUT needed for a low output cartridge with a Gryphon Pandora & Legato phono module?

SUT step up transformers should not impart sound quality,

simply boost the signal strength IF NEEDED (seems you do not). You still use your existing MM Phono stage, inside a preamp like I do, or separate phono stage with it's own riaa eq, then off to your Preamp. Phono stage and Preamp: that is where a sonic signature is created.

SUT’s change the impedance as a result of signal boost, it’s tricky, if not needed, NOOOO!

I know that the common wisdom is that a component is not suppose to impart its own sound ("straight wire with gain"), but, all you have to do is careful listening to know that they all do impart a signature so that part of the game is finding stuff that imparts a signature that you like.  I like the sound of iron--I like what transformers do to the sound--they tend to add smoothness without making the sound dull or murky or lacking in dynamics.  Transformers also tend to create a more enveloping soundstage (I suspect it is cause by phase shifting, but I like what I hear so I don't care if it is a coloration/distortion). 

This is particularly obvious when one listens to something like a unity gain in-line transformer buffer box that just adds transformer flavor to the signal--I I like what that can do in some systems that need that little bit of "sweetening."  I don't use one in my own system, but, then again my linestage has input transformers and output transformers, and my amplifier has complementary input transformers (a lot of iron). 

Thanks to all of you for your comments and suggestions. I agree with many of you that with the Gryphon Pandora & Legato phono stage, I don't need an SUT.  I have plenty of gain and the sound of the Dynavector DV-20X2L cartridge is amazing and it has a low noise floor.