Replay Guitar Exchange loves acoustic gigs, but often times your acoustic guitar with an internal mic or under saddle electronic amplification system will experience howling feedback on stage in response to PA amplification or other instruments in close proximity. With the D’Addario Screeching Halt soundhole plug you can play your electric-acoustic at far greater volume, without unwanted feedback or howling, and with no modification needed to your guitar. The tapered design allows for a great fit in most soundholes that are approximately 4” in diameter, while the inert soft rubber is safe for your guitar’s finish. It’s quick and easy to install & remove. Simply place the Screeching Halt into your acoustics' soundhole and enjoy a feedback-free performance. If you have any questions, chat, email or call Replay Guitar Exchange and we will be glad to help.