I can't see why not, but I ran it by Keith at BYOC for his input. His comment:
"Yeah, sure. As long as the Pre amp input of the power amp is ok with an unbalanced signal with an impedance of <100k Ohms. Which it probably is. I can't promise that it will be a good pre amp. I don't see why it wouldn't, but he can certainly try it out. It's not going to blow anything up."