RADIAL JDI Passive Direct Box

The Radial JDI is a passive direct box designed to handle extreme signal levels without distortion of any kind Unlike an active DI that is limited by the buffering amplifier’s rail voltage, the JDI employs a Jensen audio transformer as the engine. Jensen transformers are legendary in their ability to gracefully handle transients while 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.

Audio circuit type: Passive, transformer based

Number of channels: Single channel (mono)

Frequency response: 20Hz ~ 20KHz (± 0.2dB)

Dynamic range: 135dB

Maximum input: +21dB @ 20Hz ~ 20kHz

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

Features

Transformer: Jensen JT-DBE, 12:1 ratio

Shield: Dual Faraday, mu-metal can

Input pad: -15dB

Merge: Sums left & right sources to mono

180° polarity reverse: Inverts absolute phase

Ground lift: Disconnects pin-1 at XLR output

XLR configuration: AES standard (pin-2 hot)

Speaker filter: -30dB pad and band-pass filter

Connectors: 1/4" in & thru, XLR-M out

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

Warranty: Radial 3-year, transferable

Jensen Transformer equipped passive DI

Eliminates hum and buzz from ground loops

Virtually zero phase & harmonic distortion

Exceptional signal handling and noise rejection