Guitar Friendly, Designed for Passive Guitar Guitar- friendly, Designed for Passive Guitar,Smart-Design Transmitter, means its jack has a swivel adjustment allowing you to duck the unit out of your playing field. Just plug in the 1/4'' transmitter, and pair with the Receiver. The B-2 Transmitter works with all guitar types. It was designed to be compatible with the most popular guitars. User-Friendly Freedom NUX B-2 works like a guitar cable but offers wireless freedom. Setting up the system is simple: choose your channel on the Transmitter and Receiver, and B-2 is ready to go.