Pearl Tube coolers did not come with my Power 2 either, and the dealer told me that they were not necessary. I think this is true because the only input tubes that seem to get really hot are the two front ones, which means, you should get some sort of tube dampener or cooler for just that pair, but it seems as if input tubes are sooo plentiful and affordable these days, that in the long run will not make much difference.
PAUL
PAUL