Radial Engineering JDI-MK3

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.

Features

• Jensen Transformer equipped passive DI
• 100% isolation eliminates ground loops
• Virtually zero phase & harmonic distortion
• Exceptional signal handling
• High common mode noise rejection

Specifications

• Dynamic Range: 135 dB
• Signal to noise: 119 dB @ 100 Hz
• Maximum input: +19V
• Frequency Range: 10 Hz-40 kHz
• Linearity 20-20kHz: 0.1 dB
• Phase coherence: 4º at 20 Hz, 0º at 1 kHz
• Distortion at 20 Hz: <0.006%
• CMR rejection: 100 dB @ 60 Hz
• Input Impedance: 10 kohm
• Output Impedance: 600 ohm
• Construction: Welded steel
• Finish: Baked enamel
• Input connectors: Two 1/4" phone
• Output connectors: XLR male