Will Step Up Transformer Improve the Sound Quality?

More noise? Less noise if you shield carefully and keep AC far away. Or so it seems to me.

Of course if you put an SUT near a high voltage power supply you are asking for trouble.

I have various SUTs, special Headamps, High Gaing MC phono stages (with adjustable gain), MC phono stage with built-in SUT is the quietest of them all ... 

What is really special is Current-Injection type of MC phono which I also have (for low impedance MC).

I like simplicity, less wires, I would like to use just one box instead of two. 
But if you like different flavors you must try what you like in your system! Don’t ask others what you will like. 
If you want to try a SUT there are so many top quality SUTs from the Japanese manufacturers, inexpensive classics from the 70’s, 80’s. 
If your cart is low impedance try Current-Injection type of the MC phono stage instead of the SUTs

I have various SUTs, special Headamps, High Gaing MC phono stages (with adjustable gain), MC phono stage with built-in SUT is the quietest of them all ... 

What is really special is Current-Injection type of MC phono which I also have (for low impedance MC).

I like simplicity, less wires, I would like to use just one box instead of two. 
But if you like different flavors you must try what you like in your system! Don’t ask others what you will like. 
If you want to try a SUT there are so many top quality SUTs from the Japanese manufacturers, inexpensive classics from the 70’s, 80’s. 
If your cart is low impedance, try Current-Injection type of the MC phono stage instead of a SUTs

@chakster 

We ask for opinions of people who have experience with different options (in this case SUTs vs electronic gain) in order to gauge if there is a good reason to try them.  
That is what this forum is about ! 

Dear @pg62  : Well,  your speakers crossover at 800hz and evev that looks that those drivers/woofers are a good design you can achieve even better quality performance levels from your room/system if you lower the inherent IMD ( Intermodulation Distortion. ) on that woofer.
Tha's mean to use your subs haddled frequencies below 80hz-90hz and at the same time that the Spatial speakers runs the frequency from 80hz-90hz and up. You will note an improvement all over the system frequency range and you can do that with an external active crossover as this one:

http://old.bryston.com/products/other/10B-SUB.html

It's worth by its high rewards to do it and you have nothing to lost. It's a very good learning audio/MUSIC experience.

Here you can read about those advantages when we add to our system subs as you already own but that you are using in different way:

https://forum.audiogon.com/discussions/do-you-think-you-need-a-subwoofer/post?postid=310058#310058


R.