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Radial Engineering JDI MK3 Passive Direct Box


The world’s finest passive direct box the Radial JDI™ brings unprecedented sonic transparency and simplicity – allowing the artist to be free of hassle and focused in on their music.

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  • 100% passive design – no phantom power
  • Jensen transformer equipped
  • Dual function inputs w/2 channel merge
  • Polarity reverse switch
  • Speaker level input circuit
  • Ultra-durable welded steel chassis
  • Double sided printed circuit board
  • Protective channel for switches
  • Ground Lift and Pad switches
  • No-slip bottom pad


Radial Engineering


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