Thanks for posting ,
Nominal Impedance: 3 ohms / minimum 1.77 ohms @ 310 Hz
Sensitivity: 90 dB @ 1W @ 1m @ 315Hz
Frequency Response: 20 Hz*—33 kHz +/- 2 dB
Minimum Amplification Power Recommended: 100 watts/channel
Based on these preliminary specs its going to take a solid muscle amp to drive the WAMM , expect sensitivity to be less than 90db , since WA choose not to give it at the typical center frequency value of 1K ..
No Big deal , at the necessary budget required to play with one, I'm sure there's a Boulder amp capable of chugging it along without issue ...
Regards