Amazingly, there was a nice clean difference as the O-Port clarified the sound.

There are those who have reviewed this item and said that the sound is "amazing" I'm happy for them, but can't say the same, or that the difference was that incredible

Since getting mine, the difference in the tone of my guitar is hard to believe.

the difference was very noticeable for me, louder and noticed a bit of reverb to the sound now

The difference is really amazing

However, there is a clear positive difference when I use it in my Maton EBG-808 Acoustic Guitar especially in the bass strings

But that's not to say there's a drastic difference; in fact, it's pretty subtle

I don't know if it would really make a huge difference for a high-end instrument, though, or if it would distort the sound too much

, how much difference can it make right

When I installed it in my Alvarez RF20, what a wonderful difference!

Put the O-Port in and the difference is remarkable

The difference it makes is simply amazing

The oport made a nice difference in my guitars sound, was using a feedback suppressor in the sound hole with baffles and never satisfied with the amplifier sound, this gives a more rounded tube with a more pronounced middle and lower end and less brittle highs

I tried this and there is a clear positive difference in my classical guitar bass