Well, it certainly has a unique crossover and driver configuration. Based on the Stereophile measurements, the absolute minimum impedance is 4 Ohms around 20 Hz, and higher elsewhere.
I would say a modest amplifier of 100 Watts should be plenty in a modest room, and that these speakers are good candidates for tube amps as well.
https://www.stereophile.com/content/egglestonworks-andra-loudspeaker-measurements
I would say a modest amplifier of 100 Watts should be plenty in a modest room, and that these speakers are good candidates for tube amps as well.
https://www.stereophile.com/content/egglestonworks-andra-loudspeaker-measurements