The balanced signal volume is a barely, but recognizable increase in volume, no way is is that much.
@elliottbnewcombjr Hm. That might be because the balanced output is a completely separate circuit from the single-ended output.
Turns out Pro-Ject has a line of balanced turn tables, using what looks like "microphone style" XLRs, such as this
@davetheoilguy Triplanar offers their arms with a balanced connection as well.