The problem with using "pro" gear at home is that pro gear tends to use a higher voltage on their line outputs, the idea being that this will be better for driving the long cables needed in a live setting. Using a pro source with a normal line-level preamp would overdrive the preamp.
In this case, the unbalanced line-level outputs appear to be the standard 2.0V that most home audio equipment works with. The balanced outputs are +18dBu, which I believe is standard for pro gear, but higher than what most home gear likes. However, the balanced output is adjustable so you should be able to attenuate it to a level that doesn't overdrive your preamp.
I hope that helps.
-Rob