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The JDI Stereo Passive Direct Box from Radial Engineering features Jensen transformers that balance your signal and lower its impedance for driving long cables.
The Radial Engineering JDI Stereo Passive Direct Box is a versatile and high-quality direct box designed for use in recording studios, live sound applications, and professional audio installations. This direct box is a dual-channel passive design, which makes it suitable for use with stereo sources such as keyboards, drum machines, and other electronic instruments.

Use Cases:

The Radial JDI Stereo is an essential tool for musicians, producers, and audio professionals who demand the highest quality sound from their equipment. Whether you are recording in a studio, performing live, or installing a sound system in a venue, the JDI Stereo provides a clean and transparent signal that faithfully reproduces the source material.


The JDI Stereo is built to the highest standards of quality and features a rugged 14-gauge steel construction that ensures durability and reliability. It also features a compact and lightweight design that makes it easy to transport and use in any setting. The JDI Stereo’s technical specifications include:

Input connectors: 2 x 1/4″ TS
Output connectors: 2 x XLR (mic level)
Frequency response: 20Hz to 20kHz (+0dB/-1dB)
THD+N: 0.01% @ 1kHz
Input impedance: 140k ohms
Output impedance: 600 ohms
Ground lift switch: Yes
Pad switch: -15dB
Dimensions: 3.3″ x 5″ x 1.9″
Weight: 1.8 lbs.
Technology used:

The JDI Stereo features a passive circuit design that ensures the highest quality audio signal without the need for external power or batteries. The unit’s audio transformer is custom-designed to provide exceptional audio quality and low distortion, and it also includes a ground lift switch to help eliminate any unwanted hum or noise. The JDI Stereo’s high-impedance input is capable of handling a wide range of signal levels, from instrument-level to line-level.

In summary, the Radial Engineering JDI Stereo Passive Direct Box is a high-quality and versatile direct box that is suitable for use in a wide range of audio applications. Its dual-channel design, passive circuitry, and exceptional audio quality make it an essential tool for musicians, producers, and audio professionals who demand the best from their equipment.

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Radial Engineering JDI Stereo Passive Direct Box