I know for a fact that this amp does 2k rms at 12.5V at 1 ohm. That is straight from Bob's mouth because I was getting called out for cheating by using this amp in comp and we had to contact bob to clarify. The website says 2900RMS @ 1 ohm but does not say at what voltage (I wanna say 16V). Ive seen this amp up close and personal ran at .25 ohm and .5 ohm and taking it. I was just running it off stock alt, stock batt, no big 3 and KHC-1200. I swapped my old PH4000MD to the 150.1 and instantly gained 1.6db