Radial Engineering J48 Phantom Powered Active Direct Box

The Radial Engineering 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.

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.

Product Specifications:

Audio Circuit Type: Proprietary analog circuit with low-noise op-amp

Frequency Response: 20Hz ~ 20kHz

Dynamic Range: 109dB

Total Harmonic Distortion: 0.002% @ -5dBu

Intermodulation Distortion: 0.003% @ -3dBu

Phase Deviation: +10º at 20Hz | 0º at 1kHz | -1º at 20kHz

Input Impedance: 220kΩ - ¼" input

Output Impedance: 200Ω - XLR output

Equivalent Input Noise: -103dBu

Noise Floor: -99dB below 0dBu

Maximum Input: +10dBu

Features: Input pad, Mono Sum, 180° polarity reverse, Ground lift, HPF

Input Connectors: 1/4"

Output Connectors: Balanced XLR, 1/4" Thru

Construction: 14-gauge steel chassis and outer shell

Size (L x W x D): 3.3" x 5.0" x 2" (84 x 127 x 48mm)

Weight: 1.55 lb (720 g)

Power: 48V phantom - proprietary digital switching

Conditions: For use in dry locations only between 5°C and 40°C