Rolex, I've questioned Tony before about the wirewound resistors / o'scope-TrueRMS volt meter / DD-1 method and although I don't want to speak for him, he's mentioned this is an accurate way to obtain continuous power. This is essentially what the AD-1 does, but the ability to adjust the ohm load with a simple press of a button is WAY nice! I'm ready to beta test for you guys...send an AD-1 my way!!!