need amp help

[theogre 0]

I just picked up the subs I bought my brother for xmas 2 years. Still brand new in the box, x series(12's). I was contemplating buying a saz 1500d. I looked at the specs for it and it said that its 400w at 4 ohms. I have also read this amp is under rated in terms of power. So will this amp run these 2 subs? The alterior motive behind this amp is I will probably upgrade to q's in the next 6 months or so as well. Any help would be appreciated....