Rockford P3 12" amp?

Question

T500-1bd or kicker zx500.1 amp to power my rockford p3 12" 4 ohm

Answer 1

Both are good amps, but between the two you can squeeze a little more power out of Kicker ZX500.1 because your dual-4 ohm sub wired in parallel for a 2 ohm load will get 500W RMS out of the Kicker ZX500.1 as opposed to 400W RMS from the Rockford Fosgate T500-1BD.  (The Rockford Fosgate T500-1BD get 500W RMS at a 1 ohm load.)

Either is fine, realistically ... but I like to number match as much (given 2 comparable brands) as possible, which is why I give the slight nod to the Kicker ZX500.1.