What Class D amps will drive a 2 ohm load

I am using an Apollon NC800 SL amplifier, based on Hypex nCore NC500, with special buffer using Sparkos SS2590 discrete opamps, to amplify my Thiel CS3.7, which run almost all frequency range near 2 ohms. Recommended, sound great, no background noise whatsoever.

If you need more power consider the nCore NC1200 based amplifiers (Nord, Apollon).

The new Purifi modules should be good to go for 2 ohms too.

For about $3k you can get an nCore NC1200 based stereo amplifier from Nord/Apollon that drives 2 ohm speakers with 1200W. Plus your choice of Sparkos or Sonic Imagery discrete opamps to flavor to taste.

IMO this is a huge value.

I don't need that much power and settled on "only" 550W in 2 ohms of the NC500 for my Thiels. That is plenty of power, lowest distortion and non existing hiss and noise.

Rhetorical question: which hypothetical amplifier has more power to drive 2 ohms speakers?

Amplifier A:
100W at 8 ohms
200W at 4 ohms
400W at 2 ohms

Amplifier B:
400W at 8 ohms
700W at 4 ohms
550W at 2 ohms

Amplifier A doubles power for each half impedance.
Amplifier B has more power at 2 ohms.

Just because A is voltage limited at higher impedances, does not mean it supplies more current at 2 ohms than amplifier B.

I would (and actually did) choose to buy amplifier B.

dsper,
All amplifiers running 2 ohms continuously will get hot, independent of class. But I have seen that class D modules (Icepower, hypex, purifi) have current limit to protect the module from overcurrent.

As for thermal dissipation, musical signal has peaks, it never has the same power requirements as a full signal sine wave. So the manufacturers add dissipation to the modules in a coherent way for music listening.

If an amp was to be built to run full power sine wave at 2 ohms just for long term measurements, just add a lot of heat sinks and even a fan or two. It would do great on the benchmarks, but would make no sense for customers to pay and lift the extra weight.

As for distortion is simple: along with the Benchmark AHB2, the Purifi module is the lower distortion amplifier in the market, as far as we know (most manufacturers don't publish THD x power graphs, just single number specs).

Purifi 1ET400A has no buffer, so it is expected to a manufacturer to add a custom buffer, and add more gain as needed.

Custom buffer adds gain and increases impedance to 47k ohms. As seen on current NC500 based amps such as Nord or Apollon. Just Google it before complaining... These modules are NOT finished products yet, manufacturer is supposed to add their buffers.
For all in one, buffer+power section+power supply, see Hypex nCore MP series or ICEpower. The bufferless modules are for manufacturers wanting to differentiate their implementations.

Holy crap - 49 amps. Didn't know this one existed

https://www.hypex.nl/product/nc2k-oem/79

Here's Apollon's version:  https://www.apollonaudio.com/hypex-nc2k-monoblock-amplifier-apollon-audio-nc2kslm/

Yes, 2,000W in 2 ohms. Tell that to some who believe that say a 100W/200W/400W in 8/4/2 ohms amplifier would be more suited to drive 2 ohms speakers just because they double power as impedance halves...

George's arguments are irrational. For him doubling down power is more important that the absolute power and current the amplifier actually gives. Typical audiophile rule of thumb that has no backing on actual physics and basic math.

McIntosh MC2KW is class AB and has 2,000 W in 8, 4 or 2 ohms. In his book it is a bad amp with not enough current because it does not double down too...