i have two hifonics amps and I love mine, but i hear that they dont do rated power so that amp may push around 1800 rms im not sure on the exact number, and also if you go with one btl dual 1 ohm the you can wire the sub to 0.5ohm or 2ohm, in which I have heard of some people running 0.5ohms wit a hifonics amp but i wouldnt risk it, so with that being said i would do a dual 2ohm sub, and i would probably go with the dialy setup if you plan on listening to music and driving it everyday