If you use a step up transformer you still go through the phonostage using the moving magnet side of the phono stage so you will still be using the parasound in the chain and you may not get better sound or could go backwards pretty easily.
Will Step Up Transformer Improve the Sound Quality?
I'm wondering whether a step-up transformer would improve my analog signal path. I have a VPI Prime Signature with a Dynavector 17D3 Karat cart. My phono stage is a Parasound JC3+. The rest of the path is a PS Audio BHK Signature Preamp and a Pass Labs X-150.8 amp into Spatial Audio M3 Turbo S speakers and dual REL S/3 SHO subwoofers using Audience cables. I am looking for advice as to whether adding a SUT would markedly improve the sound. I am also looking for recommendations as to which SUT's would work well in this system.