Electro-Harmonix is a company well-respected for their line of innovative guitar effects; however, they’re not really a guitar amp company per se. That doesn’t mean, however, that they don’t know a thing or two about making amplifiers. The company’s 22 Caliber and 44 Magnum pedal-sized amplifiers have proven to be godsends as not only backup amplifiers, but as warm, musical amplifiers in their own right.