Billy Gibbons' tone on La Grange is a grinding, bluesy crunch built on a Les Paul through a Marshall Plexi pushed by a Dallas Rangemaster treble booster. The Rangemaster adds searing upper harmonics and extra gain, driving the Plexi into rich, sustained overdrive. Gibbons' picking technique -- including his signature pinch harmonics -- makes each note scream with harmonic overtones. The tone is aggressive enough for rock but rooted deeply in Texas blues tradition.