When we caught up with Sonny, he was doing fly-in dates, so he was working with his "survival" rig. For this rig, he uses two very similar '57 reissue Strats from the late '80s. They have soft V necks, Lindy Fralin Hot Vintage Pickups, and a Suhr Silent Single Coil system installed in the back to reduce the hum.
Though he's known for his Dumble amps, Landreth doesn't generally travel with them on tours that involve a lot of flying. His go-to setup is a Demeter TGA3 with 6L6 tubes run into the speakers of a Fender Twin '65 reissue backline. He uses the TGA3 exclusively on the yellow (clean) channel live, and has used the amp extensively on recordings as well.
Landreth calls his pedalboard "the runway." It's set up so it can be folded and put into a suitcase for easy traveling. He has a larger pedalboard for other tour with a Voodoo Lab switching system. This pedalboard has a Boss TU-2 Chromatic Tuner, Demeter Fuzzulator, Hermida Audio Zendrive modded for higher gain (his go-to pedal), Hermida Audio Mosferatu, Keeley Compressor, TC Electronic Chorus+, and T-Rex Replica Delay. It's powered by the Sanyo Pedal Juice rechargeable power supply.