Radial Passive DI - Industry Standard for Acoustic Guitar, Bass, and Keyboards

Experience unparalleled audio performance with the Radial JDI Passive Direct Box, acclaimed as the world's finest passive DI box. Featuring a nickel-laminated Jensen® audio transformer, the JDI ensures phase coherence, zero phase distortion, and an impressive frequency response from 10Hz to 40kHz. Its robust construction guarantees reliability even in the harshest touring environments, making it ideal for keyboards, bass, and acoustic instruments. For stereo and multi-channel applications, the JDI Duplex and JD6 are also available.

Features

• Phase Coherent Performance: Employs a nickel-laminated Jensen® audio transformer for zero phase distortion and ruler-flat response from 10Hz to 40kHz.
• Heavy-Duty Construction: Built with a 14-gauge steel chassis and internal I-beam construction for maximum durability.
• Ideal for Various Instruments: Perfect for keyboards, bass, and acoustic instruments.
• Additional Features: Includes input pad, mono sum, 180° polarity reverse, ground lift, and speaker filter.
• Passive Operation: Requires no power, ensuring ease of use in any setup.

Specifications

• Audio Circuit Type: Passive, transformer-based
• Transformer: JT-DB-EPC
• Channels: Single channel (mono)
• 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 ~ 20kHz