The Radial JDI Duplex 2-channel passive direct box delivers great sound and rock-solid reliability, whether you use it onstages or in the studio. The JDI Duplex features custom-designed Eclipse isolation transformers to give you the best performance possible at all frequencies. This box can handle very high signal levels without distorting, and its passive design helps to eliminate 60-cycle ground loops. Great for everything from passive and active guitars and basses to analog and digital keyboards, the Radial JDI Duplex is a dependable, quality performer!


  • Radial JDI Duplex 2-channel Passive DI at a Glance:
  • Custom-built Eclipse transformer equipped passive DI.
  • 100% isolation eliminates ground loops.
  • Virtually zero phase & harmonic distortion.
  • Exceptional signal handling.
  • High common mode noise rejection.
  • Welded I-beam construction.