The Martin Feedback Buster Soundhole Cover for Acoustic Guitar allows you to play your electric acoustic at far greater volume when plugged into an amp/PA, without unwanted feedback or howling.

Simply place into your guitar's soundhole to prevent feedback. The tapered design allows for a great fit in most sound holes (100 mm diameter), while the insert material is safe for your guitar’s finish. The Plug greatly reduces the amount of sound re-entering your acoustic guitar sound hole, thus stopping most feedback issues. Simply insert the Feedback Buster into your acoustic's sound hole (underneath the strings when it's strung up) and enjoy a feedback free performance. When fitted, enjoy getting closer to the stage monitors and ask for ‘more you’ without the worry of feedback. As an additional feature this Soundhole Cover can also dramatically reduce the volume of your guitar for those late night sessions.

Please note, if your guitar has an internal pickup with thumbwheel controls immediately inside the sound hole, this plug may need slight modification for it to fit well. The insert material is easy to reshape slightly to accommodate

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