Gretsch G9240 Alligator Round-Neck Resonator?? Gretsch G9240 Alligator Round Neck Resonator?? Modded with gold foil pick up?? Whether you play chunk rhythm, fingerstyle, bottleneck or anything else, the all mahogany G9240 Alligator Biscuit Roundneck resonator guitar with deluxe appointments projects its distinctively swampy tone all the way to the back door of any dancehall. Like all fine Gretsch resonator guitars, the vital feature of the G9240 is the Gretsch "Ampli Sonic???" diaphragm