Radial JDI Jensen-equipped 1-channel Passive Instrument Direct Box[custom_html] Passive Mono Direct Box with Jensen Transformer and Rugged I beam Construction [ custom_html] One of the Finest Passive DI's Available Anywhere! The Radial JDI passive direct box is the kind of premium quality direct tool you need for great sound and rock solid reliability on stages and in studios anywhere. The Radial JDI features a Jensen isolation transformer to give you the best performance possible at all frequencies. This box can