I would bet that an Onkyo Integra A-809 could do the job
easily and at a bargain price. It is stable into a 2 Ohm load
and pumps out 303 wpc dynamic power into a two ohm load. Its in the owner's manual. Incredibly low distortion. I took one to an Onkyo service center once to have it bench tested. The result 130 WPC continuous into 8 Ohms, although rated at 105 wpc by Onkyo into 8 Ohms. It was dropped from the line in or around 1998. They are hard to find used, but worth the effort. People who own them don't sell them.