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Ultra FBR2 Feedback Buster for Acoustic Guitars

Ultra FBR2 Feedback Buster for Acoustic Guitars: Musical Instruments

  • DIY small scale feedback buster
  • Rig Rundown – Tommy Emmanuel, CGP
  • OPort Test and Install
Amazon Price: $11.32 $11.32 (as of February 19, 2018 2:10 pm – Details). Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on the Amazon site at the time of purchase will apply to the purchase of this product.

Let us put it to you right. The screeches of comments WILL ruin your show if you don't locate a method to get them controlled. That's where the Acoustic Feedback Buster comes in. It plugs right into your audio hole so your acoustic guitar's interior microphone isn't really grabbing your phase screen feed and also beginning that unpleasant feedback loop. The Acoustic Feedback Buster suits almost every guitar -if your own has a soundhole from 3 7/8"-4" in size, you'll excel to go.

Customer Reviews

Not really designed for 3 7/8" sound hole, as advertised.

6 people found this helpful.
 on March 18, 2015
By John Ellis
This is advertised as fitting sound holes between 3 7/8″ and 4″. I got it for a kit guitar with a 3 7/8″ sound hole that I made . As delivered, it does not fit. By cutting away a little from it and loosening the strings to fit it under them, I finally got it in, but with great effort. This is not something you can easily install and remove. It probably works fine with a 4″ sound hole, but not with 3 7/8″.

Fits Smaller Sound holes

4 people found this helpful.
 on February 18, 2015
By Julia Wilson Brock
This cover is made slightly smaller than the other name brands, so it fits a wider variety of guitars than the competitors. I purchased another brand, and found that I had to force it into the sound hole–creating concern that the pressure would split the top wood. A friend recommended this brand, and I found it on Amazon. I ordered it and it fits PERFECTLY into my slightly smaller sound hole on my Ibanez AEB10E acoustic bass.

The Feedback Buster Does Indeed Bust Feedback – Perfectly!

 on January 16, 2018
By Bill Lundgren
I used this for a gig the same day it was delivered. My guitar didn’t feedback at all. My acoustic duo-mate’s was howlin’ like crazy. It works. And I was surprised by the thickness of the rubber of which it is made. Good stuff. And very reasonable price. I’ll be getting a second one for “the other guy.” The real test will be this weekend in a venue where we routinely have the most difficulty. 3rd fret, 5th string (“C”) is THE problem. We’ll see…

Works to beat feedback

 on February 14, 2018
By sunesis
This does a good job of stopping feedback for AE guitars, and I have been using it to soften the sound and reduce the “boom” when recording my acoustic through a microphone. Be aware that it takes some doing to get in and out of the soundhole, and when installing it, I was a little concerned that I might damage my Martin guitar. So be careful with it. Otherwise, it does what it says.

Ultra FBR2 Feedback Buster for Acoustic Guitars

2 people found this helpful.
 on August 3, 2012
By mymartind35
I’ve played live music for 25+ years and I’ve used this brand of Feedback Buster since they came out. There is nothing like them on the market, They fit snugly in your soundhole and you don’t have to worry about them rattling or falling out. Of course, they do what their name says. I’ve played through huge PA systems and used my monitor as my guitar amp. The vocals and guitar were mixed together and I heard how I sounded out front, with absolutely NO feedback. I recommend this to anyone who plays acoustic through a PA or an amplifier. It will cure any feed back problem. This is the 6th one I’ve bought. I have several guitars.

Two thumbs up!

 on April 17, 2017
By Mark F.
Eliminated my feedback problems, so I’m happy! And I’m pleasantly surprised at how little it changed my tone. It did a little, but not an atrocious amount. I would definitely recommend!

Make Sure It Fits

 on March 11, 2016
By Jennifer
We ended up returning this item as it did not fit in my daughter’s Fender guitar. Otherwise it looked like it was a good product. It would be nice if there was more information about fit.

Perfect fit for my Ibanez PCBE12MH Acoustic Bass

 on December 29, 2015
By Quercus Alba
This feedback buster fits my Ibanez PCBE12MH Acoustic Bass perfectly. It is a tight fit, you have to squeeze it in, but it fits, and it works well that way. In fact, as a pleasant surprise, it also provided a raised point that I could use as a reference point / thumb anchor point for plucking with my right hand. Great product, recommended if you have an Ibanez PCBE12MH Acoustic Bass, or an instrument with a soundhole of similar size (mine measures 3 7/8 inch diameter) where a 4 inch diameter buster would be too big.

Say Goodbye To Feedback!!

 on July 1, 2014
By Joe Joe Gadget
Fit snugly in my Breedlove Bass. Very thick rubber. Let it warm up in your hands 1st for easier insertion. Bass still sounds good unplugged with cover in. Fits under strings. No need to detune. No more horrible feedback & string vibration when amped. Highly recommended!!

Five Stars

 on October 11, 2017
This work very well on reducing the volume level.

Guitar Soundhole Cover Comparison

Guitar: Walden D350
Soundhole cover: Planet Waves
External Mic: Samson C03U
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