There are many occasions in the studio when a guitar track may need to be replayed through a different amplifier. Unfortunately, a standard line level output from the hard disk recorder or multi track digital or analog tape deck is not a good match for the input of a guitar amplifier. The Amp It Again 2 enables engineers to vary the impedance of the signal until it exactly matches the output impedance of typical guitar pickups, and so create the perfect signal match with the input of the amplifier - or amplifiers, since its dual isolated outputs means it can be used with two different amplifiers at once.This very useful device is also perfect for doing the same with the outputs of wireless systems, effects boxes and more to match up guitar and other instrument output impedances.