OB6 output impedance unbalanced to balanced

[Clb84]

What is the output impedance on the OB6?

I知 wanting to convert the unbalanced output to balanced so I can interface it through a patchbay and possibly long cable runs. Most 1:1 transformers or unbalanced to balanced converters I have seen are 600 ohm though. I知 thinking that might be too low. Any good options (I知 handy with a soldering iron but am also fine with buying something already assembled).

[Clb84]

I emailed support and they responded really fast - like an hour. I知 impressed with that kind of speed. Anyways, I知 case anyone has my same question in the future, the answer is 600 ohms.