I run all balanced in my system. I find it to usually sound better (in my system) to SE, even at short wire runs. At the least with XLR, I usually do not need to increase the volume as high :) But seriously, I realize that most tube equipment is SE. I guess that’s one of the reasons why BAT and ACR are on my short list.@jmarshak,
If you are running balanced, Atma-Sphere might be a possibility. The MP-3 comes with dual balanced outputs. Atma-Sphere made the first balanced line preamps tube or solid state (1989). Driving 10K or less is no problem so any solid state amp with a balanced input will work.
Disclaimer in case its not obvious- I am associated with Atma-Sphere.