Wow, I continue to be blown away by the level of discourse on this thread. tomthiel, are there references you can share re the serious body of study - is there anything publicly available? And how do you test an amp for 2 ohm performance? My best guess is listen to them through Thiels, but I imagine there is a technical/engineering way to do this, or does maybe this requires high dollar equipment that I could just spend on an amp? catalysis - are those amps 150wpc mono-blocks? Again, thanks all for this discussion!