A Traynor Monoblock II went up in smoke toda the other guitarist started using it into an SWR Goliath senior 6X10 for extra umph, but we were trying out a new bassist so he plugged into there too. and we plugged in the extra 18" ampeg cab we have for even more lows. we were running the amp close to dimed. Not sure if the input signal was too hot Not sure if the maxed out EQ was a bad idea Not sure if running two 4Ohm cabs took it to the edge Not sure if we were pulling too much juice from the circuit (lowering the voltage) but it started smoking smelt burnt for over an hour, and it never produced another sound. these heads should handle 2Ohms without a sweat right? the block belonged to the drummer. i'm sure he's sad.