I ran a P1000 for about the last ten months. Birth sheet states that it puts out an even 1400rms @ 1ohm. Lots of power but could never get my head around the class bd thing. I pulled it out and went with a Sundown SAE1200D. With settings the same, I get way more power from the SAE1200D than I did with the P1000. I love RF and used their stuff for years, but have really started looking for alternatives when it comes to amps. I have the Sundown in one of my rides and a Memphis in the other. So much other quality gear out there for way less money.