would I benefit getting a balanced amp (BAT 55se) - given my pre-amp is RCA output

Why Balanced Operation?

See below:

Mike

http://www.atma-sphere.com/en/resource-why-balanced.html

Don't choose your amp based on avaibility of inputs.  In your audioroom there isn't really a difference.  

That said, the BAT is a very nice amp.  I like the 6c33c tube so long as you can manage the heat.  4 of them make a LOT of heat.

Jerry

If you ever do go to balanced outputs, make sure your equipment is following the AES standards. Many manufacturers add XLR input/outputs on their equipment, but some do not follow the AES standard-in which case, you don't fully get benefits of using XLR.

Bob

@gdnrbob I googled AES and it is an encription standard.  How is that applicable?  I'm sure I got the wrong AES.

Yup, the wrong AES.

Here is an article elucidating the standard-

https://www.ranecommercial.com/kb_article.php?article=2107

Or, just PM Ralph Karsten (atmasphere), to get it from the best authority.

Bob