What Class D amps will drive a 2 ohm load

@Dsper — the "doubling thing" we love as audiophiles means that the amp will maintain its output voltage constant despite the drop in load impedance, which in turn means its power supply can adequately provide the increase in current needed to achieve said constant voltage. As you probably remember, volt/ohm= amp which means that every time you halve the ohm, you double the amps, voltage remaining constant. As power (Watts) is the product of volt x amp, it follows that keeping the volt constant means the wattage doubles.
In the real world, however, only a perfect amp will do this and there are no "perfect" amps. Many manufacturers just under specify the 8ohm rating to allow their product to be in spec for the lower loads. Nothing wrong with that in my book, you still need a well-engineered product to achieve numbers close to doubling anyway.

@georgehifi  As a matter of fact, I have heard that Behringer, slightly modded to improve the sound, and it's not a bad device. Compared to the usual hi-end device, it sounds harsh and with a bit limited extension at both ends (or so it sounded), but it has driving power aplenty.