Oh he is just talking about the different phase. Most people already know that. But clamping is the most accurate way on the go, for now. Also I doubt that his clamp on the 7.5k is going to be 50% off like that clamp was, we all know the 7.5k will put out atleast that at around 1 ohm, especially with voltage in the 15s. I just wanted to know how much more.