The o-port doesn't enhance volume much and I prefer a quieter guitar for singing unplugged.

First, when strumming I hear better projection and greater volume

As far as volume, it's hard to detect much of an improvement

For example, my Ramirez 130 Anos already had great volume and a lyrical voice, but with the O-Port, it now has a booming voice with more presence than you could ever expect from a classical guitar

I've installed one in my Dean EAB in an attempt to improve its volume, and I'm not sure that I'll retain it

sounds good on my taylor 710 acoustic its worth the money brings up volume on my guitar richer an deeper sound

Excellent for a fingerpicker and classical guitarist (like me) wishing for a natural acoustic loud volume to the likes of a Marshall stack at 11 without plugging in.

The o-port doesn't enhance volume much and I prefer a quieter guitar for singing unplugged.

It can not compete with the real Martin but for the money I paid it was a great buy and it is known as a "sound canon" for it's great natural volume

Made a noticeable difference in tonal balance as well as volume (

This does boost the sound volume a bit, and the music quality improves noticeably

Didn't expect much from this piece of plastic, but WOW!, it did increase the volume and brightness and clarity

The O-port does enhance resonance, volume and slightly greater projection

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