Which basic amps can drive 1 ohm loads ?

How about amps such as Bryston 6B and 7b down to 1 ohm loads?

Threshold S/500?

McIntosh amps with Autoformers in general? Which are best?

We are thinking of powering Acoustat 2+2 and Martin Logan CLS speakers.

I've changed again. I am using H2O monos to power my 1 ohm Scintillas.

Just thought I'd chime in on this thread after I found it during a search. Regarding the Aragon's ability to drive a 1 ohm load and, more specifically Apogee speakers - I distinctly remember the letter which Mondial wrote to Stereophile after they tested the 8008ST and complained that it blew a fuse into 2 ohms (@ 700WPC). Mondial pointed out that a famous museum (Smithsonian I think) was using Palladium's to power some Apogee speakers that they had on display that presented the most difficult load known...I can only assume that these were Scintillas.

Actually, they are Apogee Divas. They flanked Mozart's piano, giving voice to recordings made on that piano. It is just that the Scintilla gave all Apogees a bad name as amp eaters. This is not so.

Spectron Musician 2s drove my Apogees like a champ.