This is the @Fishman_Music Blackstack magnetic soundhole pickup

Installing the Rosette & Cutting the Soundhole – Classical Guitar Build with Exotic Wood

Other Uses For Your Acoustic Guitar Soundhole Cover!

Using a feedback suppressor for quiet practicing!

This is Fishman's BEST Acoustic Soundhole Pickup!

Rosewood vs Mahogany: Which Sounds Better? - Bourgeois Custom Large Soundhole Shootout

The Top 5 Best Soundhole Pickup in 2025 - Must Watch Before Buying!