Sorry my mistake they run several ranges from small 10W to 20W, these will blow your mind!!! Trust me!!!! I have a nephew who has spent 6 years as a professional installer of audio visual systems, he teaches me everything he knows. More info at
http://www.edirol.com/products/speakers.html you buy these people will ask you what they are!! And if you are running them through a seperate amplifier!!!
Cheers
Mattpower