don't think the tubes are going to last very long.
here are the specs for the RM9 MKII
8 ohms:
power 128 watts
dissipation 100 watts
4 ohms:
power 65 watts
dissipation 156 watts
2 ohms:
power 40 watts
dissipation 200 watts
now for the RM9SE:
8 ohms:
power 162 watts
dissipation 88 watts
4 ohms:
power 200 watts
dissipation 95 watts
2 ohms:
power 128 watts
dissipation 110 watts
as a side note: as good as the RM9mkII is the RM9SE eats it for breakfast. i know i have had both and still have the SE.