Holy Grail Guitar Show '18 - Teuffel Guitars Naked Birdfish and Niwa Prodigy Shawn Hammond May 23, 2018 Video German boutique guitar icon Uli Teuffel shows off even more refined versions of two heralded models—the Naked Birdfish and Niwa Prodigy. humbucker-equipped holy-grail-guitar-show-18 whats-new videos gear-show-demo single-coil-equipped teuffel-guitars guitars gear