These speakers can pose an issue to some amps. I may upgrade from M700s which have not had an issue but wanted to ask.
Wilson Sabrina. Sensitivity: 87dB/W/m at 1kHz. Frequency response: 31Hz–21kHz, ±3dB, Room Average Response. Minimum amplification: 50Wpc.
_2.53 ohms minimum @ 139 Hz
However, there is also a combination of 4.44 ohms and a capacitive phase angle of –58° at 72Hz, a frequency where music can have considerable energy; this will place a significant demand for current on the partnering amplifier.