A:Answer The fact that Sonos won't publish power should make you suspect. I don't know of any other real subwoofer company (I'm not going to include Bose because it shouldn't be considered with the others I'm about to list) that doesn't list power. I'm talking about PSA, JTR, Rythmik, Hsu, SVS, Monolith, Arendal, etc. They all list power. I'm not saying this doesn't play well but why not list the power?