For you to appreciate the special characteristics of the LPOG 2400 DL and the other devices with low frequency options (the LPOG 2400 and RAD 2400 series as well as the PCHD 2400 and the JU 99 series), it is good to know about low frequency technology. Perhaps the most important method of effective self-improvement prior to the invention of the Chi Generator® by Karl Hans Welz resulted from new knowledge of the working of the human brain. It has been well established that every thought, feeling, sensation and level of awareness has a corresponding brain wave pattern, or frequency. Consequently, you can determine the level of awareness that you want to harness for your success by controlling your brain waves. We know of Alpha, Beta, Theta, and Delta brain waves, all in the low frequency range from approximately 1 Hz to 30 Hz (cycles per second). Gamma frequencies are above 30 Hz.