In the early days of the electric guitar, manufacturers who made both guitars and amps very often attempted to sell them as matched sets—and players very often bought them that way, until they figured out there was nothing wrong with mixing and matching to suit your varying tastes in each. Throughout the mid to late1950s, Gibson’s flagship solidbody electric, the Les Paul, was partnered with an amp that has become a classic in its own right: the GA-40 Les Paul Amp. While, of course, this combo hasn’t attained values anywhere near those of the guitar it was designed to sell with, this sleeper of a tone machine has recently become far more appreciated by players and collectors alike, and recognized for the unique and inspiring piece of amp design that it is.