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Radial JDI Jensen-equipped 1-channel Passive Instrument Direct Box

Radial JDI Jensen-equipped 1-channel Passive Instrument Direct Box

The JDI is a high performance passive direct box for live concert touring and professional studio recording applications, featuring a premium Jensen transformer for exceptional audio performance.


More Information

  • Welded I-beam construction makes it impossible to torque the PC board. This virtually eliminates cold solder joints - the No.1 cause of system failure in the field.
  • An innovative 'slide-in-place' XLR trace makes it possible to use I-Beam girder construction.
  • Jensen transformer for distortion-free performance.
  • A military-grade PC board is employed for maximum wear and tear in abusive environments. Welded steel standoffs ensure the PC board will not shift.
  • A -15dB pad allows super hot inputs such as that from a CD player to be connected and balanced for long runs.
  • The Merge function turns the input and thru into a passive mixer to sum stereo feeds to mono at the XLR output. This saves valuable inputs on the mixer!
  • The input connects to the instrument.
  • The thru-put is connected to the instrument amplifier. The JDI has a high input impedance to reduce loading.
  • Book-end design creates a protective zone around the switches & connectors for best protection!
  • A heavy-duty baked enamel finish for excellent durability and great looks for years! 100% 14-gauge steel construction.
  • The XLR balanced mic level output provides 100% isolation for runs to 1000 feet without appreciable noise.
  • A polarity reverse switch flips the polarity from the AES standard Pin-2 to Pin-3 on the XLR and is used when combining sounds that may be out of phase.
  • The ground-lift disconnects the ground path to the transformer at the XLR output. This is used when a ground path is made at the input side such as with a keyboard.
  • The parallel speaker interface option introduces a second -30dB pad with band-pass filter to emulate a 12" guitar speaker.
  • A no-slip full bottom pad reduces mechanical vibration, improves electrical isolation and keeps the JDI from moving around on busy stages!

Technical Specification

  • Type:Passive DI
  • Channels:1
  • Inputs:1 x 1/4"
  • Outputs:1 x XLR, 1 x TS thru
  • Height:2"
  • Width:3.5"
  • Depth:5.5"
  • Weight:2.2 lbs.
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