This invention is a work of art.

Great invention

This invention is a work of art.

This invention is a work of art.

I wanted to try this in my natural Martin with dual P/U, but the electronics extended all the way to the rim, which made putting in the O-port impossible without cutting it.

Very important to ACCURATELY measure your sound hole diameter for the right O-Port (small or large) and "be

I also found that there seemed to be less vibration where the back of the guitar would make contact with me (though that seems to be changing the more I play the guitar after installing the port).Is the O-Port worth buying

The O Port cracked and broke with my first attempt at installation.

The O-Port enhanced fingerstyle play, but it also added clarity to gently-rolled chords

The O-port works

I got it in just fine, but then had to use a thin tool (smooth end of nail clipper lever) to coax the part of the o-port that lacks a rim out of the guitar to fit along the inner edge of the top of the sound hole.

I've read from other reviewers that the O-Port helps to suppress feedback, which would be a point in its favour

The O-Port fits snugly - but not overly tight - which is good when the time comes to remove it, as well as reassuring it's probably not influencing top plate stresses and vibrations