[Amps] "I gotta tell this"

[Peter Chadwick]

If one calls 10 times in a pile up to work the DX with 100 watts, and once with a kW, the product of power times time is equal. So from a ecological viewpoint, the two are theoretically equal, provided the overall efficiencies are the same. But the overall efficiency for the amp plus transceiver is likely to be higher, since the overhead of the low power stages etc is a smaller percentage.
73
Peter G3RZP