Also looking at this http://www.datasheetcatalog.org/data...com/MRF150.pdf There apears to be some play room with 300 watts disipation per device and they seem like they would tolerate a little more voltage. Any chance there is an adjustrment for Power supply voltage? It would be nice to see this amplifier achieve 1500w. I know theres not much diff.....but since you get to play with it! AHhhhh EHAM is littered with ALS-1300 issues like this one!