Seasoned has it largely correct. The device senses dc leakage voltage and goes with the orientation of the plug that has the lowest voltage. I would disagree, however, on how frequently you hear a benefit. You can accomplish the same using a volt meter and a contact to ground. You touch the chassis or a grounded part and go with the lowest reading.
If you hear a difference and are a purist, you can reverse the connections to the ac plug within the unit and get the results you want without using a cheater plug.
I bought a Namiki long ago and probably have not used it in 15 years. Since most of my equipment is by small manufacturers, I find that they consider this.
If you hear a difference and are a purist, you can reverse the connections to the ac plug within the unit and get the results you want without using a cheater plug.
I bought a Namiki long ago and probably have not used it in 15 years. Since most of my equipment is by small manufacturers, I find that they consider this.