The MA-202 adaptor cable allows you to connect one instrument, such as a guitar, and one microphone into one 1/4" phone jack input on your instrument amplifier. This adapter will work with passive or active pickups found in most guitars as well as basses. Simply plug in your microphone and raise the level of the amplifier then balance the volume using the normal volume controls on your guitar or bass. The special (patent pending) design will combine the signals without the problems found using a