Decent preamp

If all you need is a selector and volume, check this out:  https://www.aliexpress.com/item/32968579204.html?spm=2114.12010612.8148356.36.422e1340ix3rkL
I bought one from Ray Mottram of tubes4hifi.com under his SP10 model number, but it's the same item.  DO NOT get the remote control version!  The simpler hands-on one is the way to go.  I use with hot rodded Dyna ST70 and it is clean, quiet and liquid sounding with the stock Chinese tubes.

Mark Levinson 326s preamp is worth to look at. Phono option boards is still obtainable. 

Do you guys think XLR connection makes a big difference in sound quality? 

Those Mark Levinson preamps are around $4,000 used. Phono add-on alone exceeds my budget. I hope no one suggests Boulder or Gryphon gear.

XLR is balanced (differential) signal path connection, and therefore immune to many kinds of EM noise. Used high end reliable preamp for 40% of new price is good deal, it can run almost forever. New ML preamp cost five times more, with comparable performance.