Radial JD6

Six-Channel Passive Direct Box


Radial JD6

The Radial JD6 is a high-performance six-channel rackmount direct box designed for the most demanding studio and live touring applications.

  • Multi-channel direct box for concert touring and studio recording
  • Jensen transformer equipped for exceptional audio quality
  • Handles hot signal levels without distortion
  • Front and rear panel connectivity for additional routing options

Six JDI direct boxes in one

Stemming from the industry-standard Radial JDI™, the JD6 incorporates six premium Jensen transformers with extra RF filtering to ensure optimal signal transfer with minimal noise, phase shift, or distortion. These are also able to withstand extreme signal levels, which makes the JD6 particularly effective when managing high-output active devices such as digital pianos that will often overload most direct boxes or preamps. Each JD6 channel is equipped with a rear-mounted ¼” instrument input and thru-put for the artist’s amp plus a balanced XLR output to feed the mixing desk, while Channels 1 and 2 include front panel connectors that switch the input as soon as a cable is inserted for improved efficiency in the studio.

The Radial JD6 is a multi-channel passive direct box that has been specifically designed to address the needs of concert touring while being equally at home in the studio. The JD6 houses six completely independent transformer isolated channels for minimal cross-talk and maximum protection against noise, 60-cycle hum, and buzz or hum caused by ground loops. The JD6 employs the finest Jensen® audio transformers for absolute performance while delivering the warmth and character that has made Radial the world’s most revered direct box producer. The JD6 employs the same audio circuit as the renowned Radial JDI for explosive signal handling, virtually zero phase distortion, and truly linear response.

Audio circuit type: passive, transformer-based
Transformer: Jensen JT-DBE, 12:1 ratio
Number of channels: 6
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
Input pad, Mono Sum, 180° polarity reverse, Ground lift, LPF
Input Connectors: 1/4″, RCA
Output Connectors: 1/4″, XLR
Construction: 14-gauge steel chassis & outer shell
Size (L x W x D): 19″ x 6.25″ x 1.75″ (48.3cm x 15.875cm x 4.45cm)
Weight: 3.6 kg (8 lbs)
Shipping size (L x W x D): 22″ x 10.375″ x 4.5″ (55.9cm x 26.4cm x 11.4cm)
Shipping weight: 3.7 kg (8.15 lbs)
Power: Passive, no power required
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable


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