Anyone tried the Naiant ITP inline mic amplifier?

[AmateurAudioist]

As an emergency backup (only) to my Anchor Liberty PA for outdoor meetings, I have for the first time today hooked up a single dynamic mic to a mic cord now leading to a ITP, then on to 3-way split cord accessories and on to three Anchor Mini Vox's atop a wooden board on a single speaker stand. The ITP works astonishingly good !

Without the ITP, even with all 3 Mini Vox's full volume I had to get within an inch of the mic to get much out of the Vox's. Now with the ITP I only have to be approx 6-8 inches away, and Voxes' vols are now way, way down ! I tested indoors so got too much feedback, can't wait to test outside, but it's cold up here in St. Louis, so will wait 'til spring. Tip: When hooking up the ITP, make sure all vols are off/down initially, then bring on/up slowly.