The Radial Loopbone pedal board allows the guitar player to insert two separate pedal effects chains and remove them when not in use. Designed as a âmaster controlâ for the pedal board, the Loopbone is compact, easy to use and adds tremendous control over the pedal board. There are no signal degrading op-amps or chips in the signal path, only 100% discreet components and Radialâs highly acclaimed Class-A circuit for natural tone and exceptional dynamics.