well they are advertised "800 watts" but on the speaker and on the box say 600 watts. I am not complaining about the speakers, i bought 1 to replace a bad bazooka speaker and i am impressed. a little tough getting the screws started but it was all worth it. i am running a pioneer deh3900 and a old (1983) sony xm 120 amp (super clean) rated at 60x60 watts but at today standards it would be called 500 or 600 watts at this price you can't go wrong... gooddeals gave me a great deal and i got it in 2 days at the 3 day ups rate. thanks guys and i will use you again!!!