I am running a Critical mass ul12 basically I can run it at 1 or 3 ohms, Any amp worth a flip is going to be able to increase it's power below the industry standard of 4ohms, If you have the option to extract additional power from an amp without degrading the SQ why wouldn't you? The iPaul DM2000.1 is rated at 1000w@1ohm The thd and DF are not an issue at this load. I am a fan of Rainbow, I think the value is there @ $.50/watt I would love to see a list of amps that you think would stand toe to toe with the iPaul and save a substancial amount of money. Have you ever experianced McIntosh? It really sound to me that you are generalizing and I really don't understand your point when you have Zapco and some of the other products in you sig. truly who would pay $500 or for that matter $2000 for a sub when you can get a Rockford P1 12 for $60. Hell you can get a P3 for a couple hundred, why? Because they are better, they last longer, because they are built better and on top of that they sound better, check out the article on the Cmass UL12, "the perfect woofer" Yes its expensive, but it is nice.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif