Radial JDI Duplex

Radial JDI Duplex Angle at ZenProAudio.com
$479.99
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Radial JDI Duplex Jensen-Equipped 2-Channel Passive Direct Box - Versatile Signal Integrity

The Radial JDI Duplex is a high-performance dual-channel passive direct box designed for professional touring, broadcast, and AV integration, delivering pristine, distortion-free audio from stereo instruments, consumer electronics, and line-level sources. Featuring two premium Jensen JT-DB-E transformers, it handles extreme signals with ruler-flat response (10 Hz–40 kHz) and virtually zero phase or harmonic distortion, providing a smooth Bessel curve for natural tone. With multiple input options (1/4", RCA, 3.5mm TRS, XLR), -15 dB pad, merge function, and ground lift, the JDI Duplex simplifies connectivity while eliminating noise, ensuring reliable performance in demanding environments.

Premium Jensen Transformers

Each channel's USA-made Jensen transformer offers exceptional linearity, high dynamic range, and minimal phase deviation, smoothing peaks without artifact. The passive design requires no power, preventing ground loops and hum, while the heavy-duty steel shell and I-beam construction withstand touring rigors, making it a staple for audio professionals seeking transparency and warmth.

Key Features of the Radial JDI Duplex

  • Dual-channel passive DI with Jensen JT-DB-E transformers
  • Multiple inputs per channel: 1/4" TRS, RCA, 3.5mm TRS, XLR
  • -15 dB pad and merge function for stereo summing
  • Ground lift and 180° phase reverse per channel
  • Ruler-flat 10 Hz–40 kHz response, zero phase/harmonic distortion
  • Handles high-output sources without overload
  • Rugged steel shell with I-beam construction
  • Ideal for guitars, keyboards, consumer devices, and pro line levels

Technical Specifications

  • Type: Dual-channel passive direct box
  • Inputs: 2x (1/4" TRS, RCA, 3.5mm TRS, XLR per channel)
  • Outputs: 2x XLR balanced
  • Frequency Response: 10 Hz–40 kHz (±1 dB)
  • Max Input Level: +21 dBu (unpadded)
  • Pad: -15 dB per channel
  • Transformer: Jensen JT-DB-E per channel
  • Power: None (passive)
  • Dimensions: 5 x 3.3 x 1.8 in (127 x 84 x 46 mm)
  • Weight: 2.6 lbs (1.2 kg)
  • Warranty: 3-year transferable
Our ONE WITH EVERYTHING ZEN WARRANTY extends the standard manufacturer warranty by one year, see our ZEN WARRANTY page for details.
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