Electro-Harmonix 22 Caliber Power Amp: Serious Firepower That’s Easily Concealable

So small, and yet so powerful, the Electro-Harmonix 22 Caliber Power Amp is destined for either greatness or, umm, misunderstoodedness. In fact, EHX is so worried you might confuse this miniature guitar head for an effects pedal, that they’ve stuffed the 22 Caliber’s manual with bold-caps warnings that seem straight from the mouth of Det. John Kimble: “IT’S NOT AN EFFECTS PEDAL!!“; “I’M AN AMP YOU IDIOT!!“ We tested out the EHX 22 Caliber with our house strat and an Epi Les Paul Special II, and drove a 4x1