GX changes the rules for biofeedback entirely. A biofeedback scan which takes an hour with Spooky Pulse now takes just over 4 minutes. Even less if you do not need to measure both current and phase angle. No more sitting (or lying) down forever, waiting for a biofeedback scan to complete. GX uses state-of-the-art components and ingenious circuit design to accurately monitor the current and phase angle of signals all the way up to 40 MHz. So you can really see what is happening in your body.