The XLR outs of the Benchmark DAC1 are high output.
The Benchmark is pretty versatile in that regard. You can switch back and forth (on the back) to use the op-amp/volume pot, or have a fixed output and bypass the op-amp. In the fixed mode it also has tiny pot screws, one for each channel, that allow you to adjust the fixed output of the Benchmark. I cannot recall the range of that adjustment, but I'm sure you can find it online, per the other poster's suggestion.
Marco