CEA Certified doesn't mean a whole lot. All it means is the amp does what it says it will do at 4 ohm. Anything beyond that has nothing to do with it. What ohm is the 9500 you're running? Dual 4, Single 4? That amp is rated for 750 @ 2 ohm which is fine if the sub is a dual 4. If it's a single 4 you're only going to be pulling only around 475 watts from it. Which then you'll be wanting to look at an amp that does around 750 @ 4 ohm. Cheapest option at that point then is a bigger 2 channel and running it bridged.