Give your acoustic guitar a sonic boost with the D'Addario O-Port. This simple port-like device slips quickly and easily into your soundhole and offers an enhanced sound and response. The O-Port enhances your guitars low end and increases projection and clarity. Your tone will be fuller and richer, with a definite boost in volume. The O-Port will not damage your finish and will even help fight feedback. If you want to breath new life into your instrument, or enhance an already amazing sounding guitar you need the D'Addario O-Port.

What D'Addario says about the O-Port:

Made to fit most common Soundholes, The D'Addario O-Port will provide a fuller sound with more volume, better clarity, and enhanced projection to any guitar from beginner to custom. The O-port will also suppress feedback on acoustic electric guitars and is made from a custom blended polymer for easy installation and to prevent any damage to your guitar's finish.