Radial PZ-DI Acoustic Instrument Active Direct Box


Radial PZ-DI™ Orchestral and Acoustic Instrument Active DI / Direct Box

RRP $529.00
Found a better Price? Price match now
ETA confirmed in <24hr - option to cancel
If your prefer to wait until the stock has arrived:
CLICK HERE TO 'GET NOTIFIED' once we have stock on hand
or interest free for up to 6 months with

The Radial PZ-DI direct box is a high quality phantom powered active DI from the worlds leading manufacturer of DI's.


RADIAL PZ-DI 48V Phantom Powered Active Variable Load Direct Injection (DI) Direct Box
The Radial PZ-DI direct box is a high quality phantom powered active DI from the worlds leading manufacturer of DI's. This model is one of the most complete Radial DI's yet, with high and low pass filters, a variable impedance selector, an attenuation pad, polarity and ground switches, and a piezo microphone optimised input catering for acoustic and orchestral instruments.

Selectable Impedance for Microphone or Pick ups
The most outstanding feature of the Radial PZ-DI is the selectable 3 position load adjustment switch that allows the user to choose the most appropriate impedance when using either a microphone or pick up. Different load settings will nominally change the tone and level of signal being picked up by the microphone or pick up attached to the instrument. For example, using the 220kΩ for an instrument with a magnetic pick up will "warm" the tone, whilst the 10MΩ will help to eliminate the squawky boxy tone picked up by piezo microphones internally placed within the instruments. The 1MΩ offers the most natural selection without applying any excess load.

Designed for Acoustic Instruments
The Radial PZ-DI is ideal for use with cellos, acoustic guitars, fiddles, mandolins, violins, bass guitars, and most orchestral type instruments. With the variable low cut filter, the amount of low end resonance captured by microphone or pick up can be altered in accordance with the type of instrument, whilst engaging the high cut button will roll off high frequencies from 3kHz and above. It is ideal for smoothing out the peaks and providing a natural amplified tone of the acoustic instrument without false colouration

Ground Lift, Polarity and PAD
As per most Radial DI's, the PZ-DI includes a ground lift switch for eliminating any hum caused by intermittent signal earthing loops. The polarity switch enables the inversion of phase when required whilst the attenuation pad will guard against overloading the DI with signal, thus avoiding any chance of distortion and permitting crystal clear signal to pass.

Made of Steel
The PZ-DI is constructed from 14 gauge steel in Radial's unique book end design, that ensures added protection around all the switches and connectors. An internal beam supports the internal PC board, taking any additional pressure off the important internal components. The rubber provides extra isolation from vibration and protection from wear and tear.


  • Optimised for orchestral instruments on a live stage
  • 1/4" jack input and thru
  • XLR balanced output
  • Adjustable load for piezo microphones and magnetic pick ups
  • Variable Low Cut Filter and fixed High Cut filter
  • 48v Phantom power
  • Phase invert and Ground lift switches
  • Steel chassis
  • 3 year transferable warranty


Audio circuit type: Proprietary analog circuit with low-noise FET op-amp
Frequency response: 20Hz ~ 20kHz
Dynamic range: 105dB
Equivalent input noise: -98dBu
Maximum gain: +4.6dB
Total harmonic distortion: 0.02% /td>
Input impedance: 10M/1M/220K-Ohms
Input impedance with PAD on: 50K-Ohms
Output impedance: 200 Ohms - nominal
Input pad: -15dB
XLR configuration: AES standard (pin-2 hot)
Power: 48V phantom - proprietary digital switching
Construction: 14 gauge steel chassis and outer shell
Finish: Durable powder coat
Size: (W x H x D) 84 x 127 x 48mm (3.3" x 5.0" x 2")
Weight: 1.2 lb (544 g)
FCC approval: Complies with section 15 of the FCC Rules
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year transferable
View PDF brochure for Radial PZ-DI™ Orchestral and Acoustic Instrument Active DI / Direct Box

Be The First To Review This Product!

Help other SWAMP Industries users shop smarter by writing reviews for products you have purchased.

Write a product review


ID: 33138