Eliminate unwanted stage noise and take control of your sound with the Martin Feedback Suppressor—a must-have tool for any performing acoustic guitarist. Whether you're playing a live set, recording, or rehearsing at high volumes, this feedback suppressor allows you to increase your volume without the risk of disruptive audio feedback.

Crafted for standard 4-inch soundholes, the Martin Feedback Suppressor installs easily and is made from nitrocellulose-safe materials, ensuring it won’t damage your guitar’s finish. Its low-profile, snug fit helps maintain your instrument’s natural tone while blocking problematic frequencies that cause feedback.

Perfect for singer-songwriters, solo performers, or anyone using acoustic-electric guitars in amplified environments, this soundhole cover provides reliable performance with zero hassle.

Product Features:

• Purpose: Reduces unwanted feedback during amplified acoustic performances

• Compatibility: Fits standard 3.875"-4” round soundholes

• Material: Nitrocellulose-safe for all acoustic guitar finishes

• Easy Installation: No tools required—insert and remove in seconds

• Usage: Ideal for stage, studio, and high-volume live setups

• Tone Integrity: Maintains natural acoustic resonance while minimizing feedback

• Model: Martin Feedback Suppressor (18A0165/18A0166)

Tech Specs

• Body Size: 4 in and 3.875 in with 02 variant 
• Installation: No tools required—insert and remove easily
• Manufacturer Part Number: 18A0165/18A0166