Dynamic drivers between 30-120hz can present a load that is all over the map like 3 ohms to 130 ohms. Don't forget the Cable Cooker will break-in power cords,they have different static and dynamic loads (static,approx.4 to 50 ohms). To further complicate things copper has a kind of memory and develops a "signature current draw pattern" which will vary from system to system. A cable that is removed from a break-in device or transfered from one system to another, must break down the old draw pattern and create a new one. This will take approx.4-8 hours of music. We call this "wire conditioning", the affect (depending on system resolution) can even be noticed when replacing one of the components in the audio chain. I'll have to say after using the Cable Cooker for several years even without variable load capability it still does a very good job and I would be in deep brown chocolate with out it.