This bundle includes the JDI-MK3 direct box, MIC-XX-25 and G-HT-25-R cables.

The Radial JDI is a passive direct box designed to handle extreme signal levels without distortion of any kind. At the heart, the Radial JDI employs the world class Jensen JT-DB-EPC audio transformer delivering a smooth, warm sounding Bessel curve, reminiscent of the finest vintage gear. Ruler flat from 10Hz to 40kHz and with virtually zero phase deviation, the JDI delivers the natural, pure sound of the instrument without artifact. By its no-power passive design, the Radial JDI performs both high-to-low impedance conversion and signal balancing over a magnetic bridge that passes signal while rejecting stray DC voltage. This makes the JDI particularly adept at eliminating hum and buzz caused by ground loops.

Cable Up Industrial's line of High-Tec guitar cables are built with special low capacitance, low loss polyethylene insulated cables with oxygen free copper cores designed specifically for high impedance instrument applications. The High Tec cables feature a conductive plastic PVC layer next to a copper braided shielding, thus minimizing static noise due to mechanical movement. These cables deliver a pristine and totally clear sound with minimal noise, offering an essential uncolored guitar sound for discerning guitar players.

Cable Up's rugged Industrial line features high-performance, balanced analog microphone cables. The soldered XLR connectors are fitted with gold-plated contacts for reliable professional use at a competitive price.

All Cable Up® Industrial cables are covered by a 1-year unconditional warranty and a limited lifetime warranty against defects in material or workmanship.

JDI-MK3 Features

• Jensen Transformer equipped passive DI
• Eliminates hum and buzz from ground loops
• Virtually zero phase & harmonic distortion
• Exceptional signal handling and noise rejection

JDI-MK3 Specifications

• Audio circuit type: Passive, transformer based
• Transformer: JT-DB-EPC
• Number of channels: Single channel (mono)
• Frequency response: 20Hz ~ 20KHz (± 0.2dB)
• Dynamic range: 135dB
• Total harmonic distortion: 0.05% from 20Hz ~ 20kHz @-10dB
• Phase Deviation: 0.3° @ 100Hz; 3° @ 20Hz
• Input Impedance: 140k Ohms, unbalanced
• Output Impedance: 150 Ohms, balanced
• Maximum Input: +21dB @ 20Hz ~ 20kHz
• Features
• • Input pad, Mono Sum, 180° polarity reverse, Ground lift, Speaker filter
• General
• • Construction: 14 gauge steel chassis & outer shell
  • Finish: Durable powder coat
  • Size (L x W x D): 5" x 3.3" x 1.8" (127mm x 84.1mm x 45.5mm)
  • Weight: 1.55 lbs (703 grams)
  • Shipping size (L x W x D): 6.5" x 4" x 3" (165mm x 102mm x 76mm)
  • Shipping weight: 1.92 lbs (870.9 grams)
  • Power: Passive, no power required
  • Conditions: For use in dry locations only between 5°C and 40°C