Let us put it to you straight. The squeals of feedback WILL ruin your show if you don’t find a way to get them under control. That’s where the Acoustic Feedback Buster comes in. It plugs right into your sound hole so your acoustic guitar’s internal microphone isn’t picking up your stage monitor feed and starting that nasty feedback loop. The Acoustic Feedback Buster fits into just about every acoustic guitar -if yours has a soundhole from 3 7/8″-4″ in diameter, you’ll be good to go.
MUSICUBE Sapele Wood Soprano Ukulele 21 Inch Acoustic Mini Guitar Musical Instrument with Tuner, Gig Bag, Pick, and Cleaning Cloth, Better for Adults and Children Age 10 UP Matte Finish, Sapele
Not really designed for 3 7/8″ sound hole, as advertised.