Active Direct Box
The Pro48 is an active direct box designed for use on stage or in home recording studios, with exceptional signal handling for use with both active and passive instruments.

High performance active direct box
Increased dynamic range and headroom
48V phantom powered with switching supply
Ideal for acoustic guitar and bass

Exceptional sonic performance
The Pro48's innovative internal switching power supply significantly increases headroom producing less distortion while yielding a smooth, linear response that extends from 20Hz to well above 40kHz. This results in natural, uncolored signal that is as good or better than DI boxes costing several times more. The superior performance makes the Pro48 an ideal candidate for use with battery powered active basses and acoustic guitars that tend to overload other direct boxes.

Specifications:
Audio circuit type: Proprietary analog circuit with low-noise op-amp
Frequency response: 20Hz ~ 20kHz (± 1.5dB)
Dynamic range: 99dB
Total harmonic distortion: 0.001% @ 0dBu
Intermodulation Distortion: 0.002% @ 0dBu
Phase Deviation: +28º at 20Hz | +1º at 1kHz | -2º at 20kHz
Input Impedance: 220kΩ - ¼" input
Output Impedance: 175Ω - XLR output
Equivalent Input Noise: -86dBu
Noise Floor: -82dB below 0dBu
Maximum Input: +9dBu

Features:
Input pad, Ground lift

General:
Construction: 14-gauge steel
Size (L x W x D): 4.25" x 2.75" x 1.75" (108 x 70 x 44mm)
Weight: 1.2lb (0.54kg)
Power: 48V phantom - proprietary digital switching
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable