Suggestion for Amp to 2 ohm loads?

If 400 watts into 2 ohms would work for you, a CODA Continuum Stage+ amp would be an excellent choice. It's stable into fractions of one ohm. Has powerful, tight bass and great delicacy in the mids and highs, too. See this site for more info:

http://www.coda-continuum.com/product/index.html

pass x250.

The McCormack is nice as Craig suggests. I would add the Sim Moon W5 and the Blue Circle BC26.

one I know, proved to be relible is from audio by van alstine.
there are 2 models solid state andvaccum tube hybrid.
avahifi.com is their url.1600$ about 160 watts.

For an amplifier without a sonic signature that is stable "with any load," I recommend the Pass Labs X250. The smaller X150 may do it, but the X250 definitely will. And at 2 ohms, the X250 is rated at a 1000 watt output.

Best Regards.