Palmer and Joe Bonamassa collaborated on the new PDI03JB professional passive direct box for guitar amps.
![[NAMM] Joe Bonamassa signs a Palmer DI](https://img.audiofanzine.com/img/product/normal/2/3/231135.jpg?fm=pjpg&w=334&h=243&q=70&fit=contain&s=50b9a478ab271d836a9e41f6abce8115)