The Radial JDI stands as a testament to uncompromising audio engineering, built around the legendary Jensen audio transformer that handles extreme signal levels with remarkable grace. This passive direct box sidesteps the limitations of active designs by eliminating the rail voltage constraints that plague buffering amplifiers, instead relying on transformer-based signal conversion that produces the smooth, warm Bessel curve characteristic of premium vintage equipment.
Frequency response remains ruler-flat from 10Hz to 40kHz with virtually zero phase deviation, ensuring your instrument’s natural character comes through without colouration or artifact. The robust construction centres on a 14-gauge steel I-beam inner frame paired with an innovative book-end outer shell design that protects the PCB from touring stress while shielding switches and connectors from damage.
Professional features include input and throughput ¼” connectors, -15dB input pad, ground lift, and 180° polarity reverse functionality. The steel casing provides excellent electromagnetic interference rejection, while the transformer’s core components receive additional protection via a MuMETAL® can, guaranteeing quiet, hum-free signal transfer even in challenging live environments.
- Input and throughput ¼” connectors
- -15dB input pad
- Ground lift
- 180º degree polarity reverse
- Jensen Transformer equipped passive DI
- Eliminates hum and buzz from ground loops
- Virtually zero phase and harmonic distortion
- Exceptional signal handling and noise rejection