I have the Kicker 350.4's. Thought they were 4 x 90 watts as the ad said. When I got the amp and installed it to my Soundstream seperates in the front and Infinity 6x9's in the back they didn't provide the power I would have like to. When I read the stats on the amp again, a 14.4 volts and 2 ohms only did the amp put out 4 x 90 watts which any car doesn't run an amp that high. In actuality the amp puts out 4 x 35 watts at 4 ohms. I have had the amp for a year now and not really satisfied with it and wanting to sell it for a bigger amp. I will sell you mine if you like for $150.00 shipped if you like.