Radial Engineering PRO DI User Manual

True to the Music
Radial Engineering PRO DI User Guide
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can have more ‘reach’ and enhance the sound of some instruments. Passive DIs tend to sound more ‘down to earth’ and
less colored than active DIs. The real advantage of passive DIs over active ones is that they eliminate hum & buzz caused
by ground loops by using a transformer to isolate the input signal from the output.
Can I use a piezo pickup with the PRO DI?
If your piezo equipped instrument has it's own pre-amp and battery you can use the PRO DI with excellent results. If your
piezo equipped instrument does not have a pre-amp then you really need to have a higher input impedance to get the
most out of a piezo without a pre-amp. The Radial JDV has a 4 meg-ohm input impedance that is perfectly suited for these
types of pickups.
PRO DI and PRO D2 Specifications
Frequency response: 20Hz to 20kHz +/- 2.5dB
Total harmonic distortion: 0.01 % from 20Hz to 20kHz
Input impedance: 140K ohms (at 1K input impedance)
Balanced outputs: 600 ohms, -60dB mic level, pin-2 hot
PAD: -15dB
Gain: - 22dB
PRO DI PRO D2
BLOCK DIAGRAM AND SPECIFICATIONS

Radial Engineering PRO DI Specifications

General

Brand	Radial Engineering
Model	PRO DI
Category	Amplifier
Language	English