Is biamping worth the time and effort with emerald physics? 4.3.

No. It’s a 95dB sensitive speaker that can handle 150W RMS. I bet even a 25W amp would be way more than enough.

Emerald Physics DESIGNED the system to be ACTIVELY bi-amped and includes an active crossover/DSP(https://www.emeraldphysics.com/products/dsp-24), as well as a passive crossover. It’s hard to go wrong, using a system the way the designer intended. Using two identical stereo amps, would make everything more accurate/easily tweaked, of course.  Trust the ones that are ACTUALLY FAMILIAR with their product!