Yes, I can create a stereo pair with two models having the same power (108dB with 108dB, 103dB with 103dB etc). However, I will be able to play in multiroom with all the Phantoms (I and II), whatever the model or power.
Unlike Watts Peak, Watts RMS measures the average real raw power produced by an amplifier.
Phantom is covered by a two-year international warranty effective from date of purchase or delivery. For total peace of mind, our Devialet Care package provides an additional three-year warranty (that's five in total) and covers for one incident of accidental damage, subject to additional charge as per recommended rates.