Einstein

Hello everybody, I'm having a system change but in the first instance I'd like to keep my pre amp as it's the nicest preamp I've heard. Now I have a conundrum.... The Einstein only has balanced outputs and I'm looking at single ended triode power amps. Therefore my question is this... Can I use a pair of xlr-Rica adapters on the output of the Einstein that ground the - pin of the output. What would be the downside of doing this ??
I'd probably find another SE pre in time if this is not such a good solution but this would allow me to spread the cost out right now.

Thanks all.