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Radial Engineering J48 Premium Stereo Active DI


In stock
Weight:  0.00
Price: $379.99
South Austin
Out of stock
North Austin
1 in stock.

Phantom Powered Stereo Active Direct Box

The J48 stereo is a high performance 2-channel 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
  • Use with stereo sources or multiple instruments
  • Powered by 48V phantom, no batteries required

Higher voltage, higher headroom

Most battery-powered instruments and stereo keyboards 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 Stereo 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. The J48 maintains stereo separation between the left and right channels, allowing it to be used on two separate instruments or with stereo sources such as keyboards.

Unbalanced 1/4" input jacks used to connect instruments to the J48 Stereo.

Thru-put from the J48 Stereo to a the amp. High impedance will not load instrument down.

15 dB PAD
Reduces the input sensitivity for active basses and high output keyboards.

Illuminates when 48V phantom power is present.

High pass filter reduces excessive low frequencies that can cause resonance and acoustic feedback on stage.

J48 Stereo with Keyboard

Using the J48 Stereo with a keyboard
The J48's active circuit and amazing signal handling makes it a great choice for both digital and old school analog keyboards. A built-in pad reduces the sensitivity if needed.

J48 Stereo with Bass

Using the J48 Stereo with two basses
The compact design makes it easy to connect two guitars using one direct box. The great sounding active circuit sounds as good as other DIs costing five times as much!

J48 Stereo with Different Instruments

J48 Stereo with two different instruments
Use the J48 Stereo with two completely different instruments. The low crosstalk makes it a great choice when doubling between bass, acoustic guitar, fiddle, or mandolin.

Model: J48STEREO
Manufacturer: Radial Engineer