Ortofon Cadenza vs. old Ortofon MC30 Super2 ?

@theflattire Yes.... certainly if you're happy.. then leave it alone.  

The MC stage in the Parasound is active.  I had the JC3 for ~8 years, and happy with the sound, but the noise bugged me.  I liked my SUT sound too, but there was that resolution trade-off.  I recently upgraded to the JC3+ which has lower noise floor, and that cost me $1000 to do.  While I'm happy with the upgrade, I think MAYBE that money would have been better spent on a better SUT.  Hard to say. 

Looking at the Modwright description, your MC input is an internal SUT.  So your noise spec should be great either way.  Just comparing the sound of 2 different SUTs. 

I would say to try it.  Using an SUT may give you a blacker background.

I would go with some used Cinemag 1254s, just to try and then maybe more expensive SUTs if you find it helps.

Listening last night without the Hashimotos I didn't notice any kind of drop off.  At this level IMO any difference is going to be small.

Is it worth it? I kept looking for that last 5% but not anymore.  While I appreciate the difference, it's not how I listen so I realized I'm chasing bragging rights.  If you know what I mean.

An SUT does make a difference but like anything else it's also synergy.

I would try it, just for peace of mind.