FISHMAN PRO-RES-001 PASSIVE RESOPHONIC PICKUP - This pickup reproduces the unique tonal character of your resophonic guitar. This simple and unobtrusive pickup, (the size and shape of a small washer), captures that funky, throaty signature resophonic tone, with unprecedented accuracy and resistance to feedback - Fasten to the center of the cone in all resonator guitars - Resophonic Pickup fits spider and Dobro® biscuit bridges - Strong resistance to feedback - Professional Installation Recommended... we do that -