Which basic amps can drive 1 ohm loads ?

Yep I third Aragon. Palladiums will delivery over 1000(1500 on dynamic peaks roughly) watts at under 2 ohms.

I wouldn't chance it... I couldn't afford to.

Muralman: Just read over some of your responses. Aragon Palladiums can rum 1 ohm and below with realitve ease. Very underrated amp,especially for driving extreme low impedance loads. Awhile back we did a lil test running 4(at one point we had 6 speakers in total running off of one channel, but the last pair were 6 ohm nominal speakers) true 4 ohm nominal speakers in parallel off of one channel back in 98'. She ran the load all day long(which is a serious statement)at moderate volume with no overheating issues whatsoever. If your wall has the current, the Aragon's will deliver, and they will do it reliably. Too bad Klipsh owns em now. I believe the Palladium 1k's are going to be discontinued real soon. They are the last of the truely industrial quality amps built by this company.

Ritteri, I am not arguing about whether the Palladium has the current to run <1 ohm. I just would not put my money on them surviving high dynamic peak fluctuations.

There are very few <1 ohm speakers out there. I own one of them. My X600 monos have enormous power capabilities, and huge heat sinks. Even they get too hot to touch more than momentarily.

I know a lot of the <1ohm speaker owners. None use Aragons. Many use Aragons on 4 ohm speakers, mostly in a bi amp configuration, the Aragon being relegated to bass panel duty.

Mural: You should tear an Aragon apart, like I stated the amps capabilities are far underrated which is a shame. Even though the heatsinks look small in the configuration their in, its actually surprising the actual surface area of them. The amps run relatively cool with a nominal 3-4 ohm load putting out about 6-800 watts, under 2 ohms they do get hot. But Dynamics really arent a problem for this amp. 1500 watt dynamic peaks at 2 ohms or less is nothing to sneeze at. And I kinda think thats more than enough power for concert level sound levels in even really large rooms wouldnt you say? Now as for how long they would run at this impedance, yes, thats something I never did or tried with them for long listening sessions at a time(nor found the need to really as there arent many speakers made with a 2 ohm nominal load or lower) at maximum volume capabilities. But talking with a few techs a few years back at Mondial Designs, I was told that if each monoblock is given its own dedicated 20amp circuit(which they should really be on to begin with), they would run ANY speaker and are completely stable down to below a half ohm if driven within their(with caution not to overdrive the output stage) capabilites.