Bridge a powerful 2-channel amp.
The DD S2b is rated at 1600 bridged @ 4 ohms and 2700 @ 2 ohms.
http://www.ddaudio.com/products/mobile-audio/amplifiers/full-range-amplifiers/s-series/s2b.aspx
Anything high end at around 400w x 2 should bridge to around 1500 watts.
It's going to be very costly on your electrical though, as most of these types of amps are class AB.