Radial J48 Active DI Box

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Phantom Powered Active Direct Box

The J48 is a high performance active direct box for live concert touring and professional recording studio applications, with the ability to handle extreme transients without distortion while delivering the natural sound of your instrument.

Exceptional headroom & dynamic range

Retains the natural sound of the instrument

Merge switch sums stereo instruments to mono

Powered by 48V phantom, no batteries required

Higher Rail Voltage, Higher Headroom

Most battery-powered guitars and basses will produce as much as 7 Volts when played at maximum volume, which can easily overload typical active direct boxes which have are only able to handle about 3 Volts. The J48 uses a unique switching power supply that raises the internal rail voltage so it can handle up to an incredible 9 Volts, resulting in improved signal handling and greater headroom. This additional headroom significantly reduces distortion of all types, allowing the natural tone and character of the instrument to shine through.

J48 Applications:

J48 for Live Touring

A direct box is primarily used to get an instrument signal from the stage to the mixing desk and PA system. The Radial J48 delivers the natural tone exceptionally long distances without adding distortion or coloring the sound in any way.

J48 in the Studio

When recording direct, the quality of the direct box interface assures the purest signal going to the track. The Radial J48 is particularly well suited for recording bass or capturing a direct track from a guitar.

Reamping with the J48

Reamping means sending a dry track from the recorder back out to pedals and amps. This tricks has been used for years by top professionals. The Radial J48 is ideally suited to capture the sound of the instrument for later Reamping.


– 15db Pad reduces the input sensitivity for active basses and high output keyboards

– 48V Check light flashes once when the 80Hz filter is depressed to confirm 48V phantom is present

– High impedance thru-put will not load instrument down

– Merge switch changes the input and thru-put to two LR input and mixes the output to mono at the XLR



Weight 0.7 kg
Dimensions 13 × 9 × 5 cm

Radial J48 Active DI Box


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