ok cool, those go for like 1000$ dont they? and they put out 1800w so 900 each sub?? i was looking for atleast 1200w a sub was looking at the Z7000 as well it puts out 1500w@1ohms was thinking maybe 2 of those if i get 2 mags or 4 if i get 4 or should i just get 1 amp to run all 4? or 2 w.e. i decide to do.. <{POST_SNAPBACK}> The 20.1 go for around 700. You can get a discount if you search around. I will be picking one up as soon as I sell my current amp for $525. If you run mags you will want to run the mp at .5 ohm. It is fine for the amp MUCH more power then 1800rms I promice. More in the range of 2200rms @ 1ohm, so you are looking at quite a bit at .5.