36v, 72v active filter on AudioQuest IC

Are they good and actually work, or this is a hype?
Want to hear from AQ's owners who have tried them with models without the battery.

Which model is their entry level with this "battery" application?

Did any1 upgrade from model with 36v to model that equip't 72v and hear imprvoment?

For some reasons, I see AQ is over rated. Fake ones (Hdmi from HongKong) are all over eBay....