o@vinylfun By adding a SUT there is also the addition of a Richness of Tonality.
Bob's Devices use Tranx that I believe will be ones that produce the lower on the scale Richness of Tone, as I use similar Cinemag Tranx' myself I can offer this as a a assessment of the end sound.
If the risks associated with adding Richness of Tone are wanted to be avoided, the use of a Head Amp, the ones I have experienced in comparisons, will create a End Sound that in comparison to a SUT, does not create a detectable Richness to the Tonality.
I have one Phonostage I prefer the Head Amp in place of the Built In MC Input and a SUT as the Option.