I have been following the pulse induction developments at Fisher Labs since January 2015. Things heated up in January 2018 with the Manta prototype that later became the Impulse AQ. I followed and posted every tidbit I could find about this detector from 2018 on. Why my interest? Simple. I have a history of some pretty serious PI beach detecting. I've used every ground balancing beach detector made... though that's not saying much since there have only been a few. It has been my perception