You can but it is a different sound signature. The Lea amp you load the DSP settings from their website into it.
You can put those DSP settings into a different device like a mini-dsp to get the same sound. I would set any processor's or receiver's max volume to protect the speakers. They don't cover warranty repairs if not using that amp as part of the DSP settings is protection.
I did try it with a Parasound amp and it sounds good but definitely better with the Lea amp and the DSP settings.