The Electro‑Harmonix LPB‑3 Linear Power Booster & EQ delivers up to +33 dB of clean boost with powerful tone shaping. A 3‑band active EQ features a parametric Mid for precise sculpting, while a Pre‑Gain stage optimises level before the boost. Selectable True/Buffered Bypass aids rig integration. Compact Nano‑series chassis.