The Radial JDI is considered by many to be the world’s finest direct box. It is a passive DI that employs a Jensen isolation transformer for optimum audio performance offering outstanding linearity at all frequencies, combined with extraordinary level handling without introducing distortion. Being completely passive, the plug & play JDI does not require any powering and has the unique advantage of eliminating 60-cycle ground loops. This makes the JDI a definite favorite with informed audio engineers. The JDI is great for guitars, bass, and keyboards and is particularly adept with high-output, broadband instruments such as active instruments and digital keyboards. The JDI may be rack-mounted using the J-Rak and is also available in a stereo (2-channel) version called the JDI Duplex and the 6-channel rack-mountable JD6.
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- Transformer: Jensen JT-DBE
- Shield: Dual Faraday, MuMETAL® 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
- 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
- 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