Here are a couple of video at the Alpha 9500 amp at Dayton. The first is an interview with N0QO from Alpha and the second is a demonstration of the amplifier.
http://www.youtube.com/watch?v=5b3fL-BghTY
http://www.youtube.com/watch?v=9xFEAaTCFT8
http://www.youtube.com/watch?v=5b3fL-BghTY
http://www.youtube.com/watch?v=9xFEAaTCFT8