Live! At Leo’s: Full Demo with Griff Hamlin of BluesGuitarUnleashed.com. In this video, Griff showcases the magic of Leo Fender’s S-500, including the versatility of the MFD pickups, PTB control system, the effectiveness of the Dual Fulcrum vibrato and more. The Live! At Leo’s studio is located at Leo Fender’s historic G&L factory on Fender Avenue in Fullerton, California – The Birthplace Of Bolt-on™.