Radial DI boxes are direct boxes from Radial Engineering, built in rugged steel enclosures, with the phantom-powered J48 active DI and the transformer-isolated JDI passive DI.
Radial DI boxes are direct boxes from Radial Engineering, built in rugged steel enclosures, with the phantom-powered J48 active DI and the transformer-isolated JDI passive DI.
About Radial DI Boxes
Radial Engineering direct boxes are a fixture on professional stage riders for good reason: rugged steel enclosures, premium components and clean, consistent audio night after night. The flagship J48 is a 48V phantom-powered active DI with plenty of headroom, while the JDI is a passive design built around a premium Jensen transformer that stays clean with hot signals and naturally rejects ground hum.
SWAMP stocks the Radial Engineering range locally, from the workhorse ProDI, the ProD2 stereo DI and the Pro48 through to the PZ-DI for piezo-equipped acoustic instruments and the compact StageBug series. Radial also makes the popular BigShot ABY switcher pedal for running two amps. Not sure which type you need? Compare active DI boxes and passive DI boxes, or browse the full DI box range.
The J48 is an active DI powered by 48V phantom power, with a high input impedance that suits passive pickups and low-output sources. The JDI is passive, using a Jensen transformer that handles hot signals from keyboards and active instruments cleanly and isolates ground loop hum.
For regular gigging and studio work, yes. Radial DIs are built into heavy-duty steel enclosures with protective zones around the switches and jacks, so they survive years of touring. Their consistent, transparent sound is why they appear on professional technical riders worldwide.
The PZ-DI is designed for piezo pickups, with a selectable 10 megohm input impedance that smooths out the harsh edge of undersaddle pickups. The J48 is also a popular acoustic choice thanks to its high headroom and low noise.