OP asked for 2000 watts @ 8 ohms mono not a 1000 watts amp, a bery will give you 2000 at 4 ohms mono.
I would suggest something like a Crown CE4000 will give you 2400 watts @ 8 ohms mono, this amp have been proven many time to be great.
I have an ep2500 but messed up on ordereing the voice coils on my woofers and have dual 2 which cant be wired to 2 ohm, I can make them 4 or chain them to 8. I can only get 600-650w for each from the ep (as tested out on avs). I could get another EP but would just as soon get somethign that handles both subs at 900-1000w and let the ep handle my mains.