i have one, love it. my only complaint is that i don't like how it mounts with its' removable feet. I wish it mounted like some xtants how you have to remove the cover/heatsink to access the mounting holes.
I love the nine.1 thus far. I have a 120 amp alt and I can get some dimming but that is more on the longer rap/ bass cd's. It draws more current that the Hifonics BX1000 for sure. It is a great amp for the money.