They might not be considered the stars of the show, but line selectors and channel switchers are definitely among the most essential workhorses of a good pedalboard. The LEF-330 ABY selector from budget guitar effects pedal maker Rowin is a versatile selector pedal, letting your signal flow from A or B to Y or vice versa. You can connect two instruments—an electric and an acoustic guitar, for example—to one amp or use the LEF-330 ABY to throw your instrument’s signal to two separate amps for a true stereo attack.