Not sure if they are balanced, but CAT are among my favorites.
Tube pre-amps: balanced a big deal?
In the market for a low priced ($2,000) tube pre-amp to match up Krell sav 300il and Thiel CS 2.3s, looking at jolida fusion, schitt Freya, dehavilland ultraverve, or similar, wondering how important it is to have balanced (xlr) connections? When I went to balanced it really opened up the soundstage, what might I lose by moving back to rca?